…#16676)Bumps[github.com/prometheus/client_golang](https://github.com/prometheus/client_golang)from 1.20.5 to 1.21.0.<details><summary>Release notes</summary><p><em>Sourced from <ahref="https://github.com/prometheus/client_golang/releases">github.com/prometheus/client_golang'sreleases</a>.</em></p><blockquote><h2>v1.21.0 / 2025-02-19</h2><p>:warning: This release contains potential breaking change if youupgrade <code>github.com/prometheus/common</code> to 0.62+ together withclient_golang (and depend on the strict, legacy validation for the labelnames). New common version <ahref="https://redirect.github.com/prometheus/common/pull/724">changes<code>model.NameValidationScheme</code> global variable</a>, whichrelaxes the validation of label names and metric name, allowing allUTF-8 characters. Typically, this should not break any user, unless yourtest or usage expects strict certain names to panic/fail onclient_golang metric registration, gathering or scrape. In case ofproblems change <code>model.NameValidationScheme</code> to old<code>model.LegacyValidation</code> value in your project<code>init</code> function.⚠️</p><ul><li>[BUGFIX] gocollector: Fix help message for runtime/metric metrics.<ahref="https://redirect.github.com/prometheus/client_golang/issues/1583">#1583</a></li><li>[BUGFIX] prometheus: Fix <code>Desc.String()</code> method for nolabels case. <ahref="https://redirect.github.com/prometheus/client_golang/issues/1687">#1687</a></li><li>[PERF] prometheus: Optimize popular<code>prometheus.BuildFQName</code> function; now up to 30% faster. <ahref="https://redirect.github.com/prometheus/client_golang/issues/1665">#1665</a></li><li>[PERF] prometheus: Optimize <code>Inc</code>, <code>Add</code> and<code>Observe</code> cumulative metrics; now up to 50% faster under highconcurrent contention. <ahref="https://redirect.github.com/prometheus/client_golang/issues/1661">#1661</a></li><li>[CHANGE] Upgrade prometheus/common to 0.62.0 which changes<code>model.NameValidationScheme</code> global variable. <ahref="https://redirect.github.com/prometheus/client_golang/issues/1712">#1712</a></li><li>[CHANGE] Add support for Go 1.23. <ahref="https://redirect.github.com/prometheus/client_golang/issues/1602">#1602</a></li><li>[FEATURE] process_collector: Add support for Darwin systems. <ahref="https://redirect.github.com/prometheus/client_golang/issues/1600">#1600</a><ahref="https://redirect.github.com/prometheus/client_golang/issues/1616">#1616</a><ahref="https://redirect.github.com/prometheus/client_golang/issues/1625">#1625</a><ahref="https://redirect.github.com/prometheus/client_golang/issues/1675">#1675</a><ahref="https://redirect.github.com/prometheus/client_golang/issues/1715">#1715</a></li><li>[FEATURE] api: Add ability to invoke<code>CloseIdleConnections</code> on api.Client using<code>api.Client.(CloseIdler).CloseIdleConnections()</code> casting. <ahref="https://redirect.github.com/prometheus/client_golang/issues/1513">#1513</a></li><li>[FEATURE] promhttp: Add<code>promhttp.HandlerOpts.EnableOpenMetricsTextCreatedSamples</code>option to create OpenMetrics _created lines. Not recommended unless youwant to use opt-in Created Timestamp feature. Community works onOpenMetrics 2.0 format that should make those lines obsolete (theyincrease cardinality significantly). <ahref="https://redirect.github.com/prometheus/client_golang/issues/1408">#1408</a></li><li>[FEATURE] prometheus: Add <code>NewConstNativeHistogram</code>function. <ahref="https://redirect.github.com/prometheus/client_golang/issues/1654">#1654</a></li></ul><!-- raw HTML omitted --></blockquote><p>... (truncated)</p></details><details><summary>Changelog</summary><p><em>Sourced from <ahref="https://github.com/prometheus/client_golang/blob/main/CHANGELOG.md">github.com/prometheus/client_golang'schangelog</a>.</em></p><blockquote><h2>1.21.0 / 2025-02-17</h2><p>:warning: This release contains potential breaking change if youupgrade <code>github.com/prometheus/common</code> to 0.62+ together withclient_golang. :warning:</p><p>New common version <ahref="https://redirect.github.com/prometheus/common/pull/724">changes<code>model.NameValidationScheme</code> global variable</a>, whichrelaxes the validation of label names and metric name, allowing allUTF-8 characters. Typically, this should not break any user, unless yourtest or usage expects strict certain names to panic/fail onclient_golang metric registration, gathering or scrape. In case ofproblems change <code>model.NameValidationScheme</code> to old<code>model.LegacyValidation</code> value in your project<code>init</code> function.</p><ul><li>[BUGFIX] gocollector: Fix help message for runtime/metric metrics.<ahref="https://redirect.github.com/prometheus/client_golang/issues/1583">#1583</a></li><li>[BUGFIX] prometheus: Fix <code>Desc.String()</code> method for nolabels case. <ahref="https://redirect.github.com/prometheus/client_golang/issues/1687">#1687</a></li><li>[ENHANCEMENT] prometheus: Optimize popular<code>prometheus.BuildFQName</code> function; now up to 30% faster. <ahref="https://redirect.github.com/prometheus/client_golang/issues/1665">#1665</a></li><li>[ENHANCEMENT] prometheus: Optimize <code>Inc</code>,<code>Add</code> and <code>Observe</code> cumulative metrics; now up to50% faster under high concurrent contention. <ahref="https://redirect.github.com/prometheus/client_golang/issues/1661">#1661</a></li><li>[CHANGE] Upgrade prometheus/common to 0.62.0 which changes<code>model.NameValidationScheme</code> global variable. <ahref="https://redirect.github.com/prometheus/client_golang/issues/1712">#1712</a></li><li>[CHANGE] Add support for Go 1.23. <ahref="https://redirect.github.com/prometheus/client_golang/issues/1602">#1602</a></li><li>[FEATURE] process_collector: Add support for Darwin systems. <ahref="https://redirect.github.com/prometheus/client_golang/issues/1600">#1600</a><ahref="https://redirect.github.com/prometheus/client_golang/issues/1616">#1616</a><ahref="https://redirect.github.com/prometheus/client_golang/issues/1625">#1625</a><ahref="https://redirect.github.com/prometheus/client_golang/issues/1675">#1675</a><ahref="https://redirect.github.com/prometheus/client_golang/issues/1715">#1715</a></li><li>[FEATURE] api: Add ability to invoke<code>CloseIdleConnections</code> on api.Client using<code>api.Client.(CloseIdler).CloseIdleConnections()</code> casting. <ahref="https://redirect.github.com/prometheus/client_golang/issues/1513">#1513</a></li><li>[FEATURE] promhttp: Add<code>promhttp.HandlerOpts.EnableOpenMetricsTextCreatedSamples</code>option to create OpenMetrics _created lines. Not recommended unless youwant to use opt-in Created Timestamp feature. Community works onOpenMetrics 2.0 format that should make those lines obsolete (theyincrease cardinality significantly). <ahref="https://redirect.github.com/prometheus/client_golang/issues/1408">#1408</a></li><li>[FEATURE] prometheus: Add <code>NewConstNativeHistogram</code>function. <ahref="https://redirect.github.com/prometheus/client_golang/issues/1654">#1654</a></li></ul></blockquote></details><details><summary>Commits</summary><ul><li><ahref="https://github.com/prometheus/client_golang/commit/eaf03ef9509cf7e0e56a7d0eda1f11a05506f045"><code>eaf03ef</code></a>Cut 1.21.0 (<ahref="https://redirect.github.com/prometheus/client_golang/issues/1737">#1737</a>)</li><li><ahref="https://github.com/prometheus/client_golang/commit/f1f89dc6c527ddf1e80b49c4f56b2c52b164105c"><code>f1f89dc</code></a>Cut 1.21.0-rc.0 (<ahref="https://redirect.github.com/prometheus/client_golang/issues/1718">#1718</a>)</li><li><ahref="https://github.com/prometheus/client_golang/commit/c923f7c8e40301ccf857e28f655a241695c470d7"><code>c923f7c</code></a>Revert &quot;ci: daggerize test and lint pipelines (<ahref="https://redirect.github.com/prometheus/client_golang/issues/1534">#1534</a>)&quot;(<ahref="https://redirect.github.com/prometheus/client_golang/issues/1717">#1717</a>)</li><li><ahref="https://github.com/prometheus/client_golang/commit/1bcda802c13d6334110e088bbef96d32c1c05db7"><code>1bcda80</code></a>process collector: Fixed pedantic registry failures on darwin with cgo.(<ahref="https://redirect.github.com/prometheus/client_golang/issues/1715">#1715</a>)</li><li><ahref="https://github.com/prometheus/client_golang/commit/038b37aea518190a66e2d4df5d231e549eed7759"><code>038b37a</code></a>tutorials/whatsup: Updated deps (<ahref="https://redirect.github.com/prometheus/client_golang/issues/1716">#1716</a>)</li><li><ahref="https://github.com/prometheus/client_golang/commit/56a24311d5ef75b4c198516ed1c4555318ec729a"><code>56a2431</code></a>docs: Add RELEASE.md for the release process (<ahref="https://redirect.github.com/prometheus/client_golang/issues/1690">#1690</a>)</li><li><ahref="https://github.com/prometheus/client_golang/commit/cbd9526e6ddc36b3cec0407b70e86e8249edf4ed"><code>cbd9526</code></a>Merge pull request <ahref="https://redirect.github.com/prometheus/client_golang/issues/1713">#1713</a>from prometheus/dependabot/go_modules/tutorials/what...</li><li><ahref="https://github.com/prometheus/client_golang/commit/80b5a2a705c6cf39bf08260d06fd130024affbd5"><code>80b5a2a</code></a>build(deps): bump golang.org/x/net in /tutorials/whatsup</li><li><ahref="https://github.com/prometheus/client_golang/commit/1a822a841f0ae8c1b93d6cbd3748d881e9023e05"><code>1a822a8</code></a>Upgrade to prometheus/common 0.62.0 with breaking change (<ahref="https://redirect.github.com/prometheus/client_golang/issues/1712">#1712</a>)</li><li><ahref="https://github.com/prometheus/client_golang/commit/7b39d0144166aa94cc8ce4125bcb3b0da89aad5e"><code>7b39d01</code></a>Update common Prometheus files (<ahref="https://redirect.github.com/prometheus/client_golang/issues/1708">#1708</a>)</li><li>Additional commits viewable in <ahref="https://github.com/prometheus/client_golang/compare/v1.20.5...v1.21.0">compareview</a></li></ul></details><br />[![Dependabot compatibilityscore](https://dependabot-badges.githubapp.com/badges/compatibility_score?dependency-name=github.com/prometheus/client_golang&package-manager=go_modules&previous-version=1.20.5&new-version=1.21.0)](https://docs.github.com/en/github/managing-security-vulnerabilities/about-dependabot-security-updates#about-compatibility-scores)Dependabot will resolve any conflicts with this PR as long as you don'talter it yourself. 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