Merge pull request#2961 from github/koesie10/disable-combine-sarif-f……iles-ghesUnconditionally disable combining SARIF files for GHES 3.18

Merge pull request#2928 from github/update-supported-enterprise-serv……er-versionsUpdate supported GitHub Enterprise Server versions

Merge pull request#2916 from github/dependabot/npm_and_yarn/npm-5cdc……cdc43fbuild(deps): bump the npm group with 5 updates

Merge pull request#2908 from github/henrymercer/dependabotDependabot: Remove deprecated `reviewers` config