[![WhiteSource Renovate](https://app.renovatebot.com/images/banner.svg)](https://renovatebot.com)This PR contains the following updates:| Package | Change | Age | Adoption | Passing | Confidence ||---|---|---|---|---|---|| [google-cloud-bigquery](https://togithub.com/googleapis/python-bigquery) | `==2.16.1` -> `==2.17.0` | [![age](https://badges.renovateapi.com/packages/pypi/google-cloud-bigquery/2.17.0/age-slim)](https://docs.renovatebot.com/merge-confidence/) | [![adoption](https://badges.renovateapi.com/packages/pypi/google-cloud-bigquery/2.17.0/adoption-slim)](https://docs.renovatebot.com/merge-confidence/) | [![passing](https://badges.renovateapi.com/packages/pypi/google-cloud-bigquery/2.17.0/compatibility-slim/2.16.1)](https://docs.renovatebot.com/merge-confidence/) | [![confidence](https://badges.renovateapi.com/packages/pypi/google-cloud-bigquery/2.17.0/confidence-slim/2.16.1)](https://docs.renovatebot.com/merge-confidence/) |---### Release Notes<details><summary>googleapis/python-bigquery</summary>### [`v2.17.0`](https://togithub.com/googleapis/python-bigquery/blob/master/CHANGELOG.md#&#8203;2170-httpswwwgithubcomgoogleapispython-bigquerycomparev2161v2170-2021-05-21)[Compare Source](https://togithub.com/googleapis/python-bigquery/compare/v2.16.1...v2.17.0)##### Features-   detect obsolete BQ Storage extra at runtime ([#&#8203;666](https://www.github.com/googleapis/python-bigquery/issues/666)) ([bd7dbda](https://www.github.com/googleapis/python-bigquery/commit/bd7dbdae5c972b16bafc53c67911eeaa3255a880))-   Support parameterized NUMERIC, BIGNUMERIC, STRING, and BYTES types ([#&#8203;673](https://www.github.com/googleapis/python-bigquery/issues/673)) ([45421e7](https://www.github.com/googleapis/python-bigquery/commit/45421e73bfcddb244822e6a5cd43be6bd1ca2256))##### Bug Fixes-   **tests:** invalid path to strptime() ([#&#8203;672](https://www.github.com/googleapis/python-bigquery/issues/672)) ([591cdd8](https://www.github.com/googleapis/python-bigquery/commit/591cdd851bb1321b048a05a378a0ef48d3ade462))##### [2.16.1](https://www.github.com/googleapis/python-bigquery/compare/v2.16.0...v2.16.1) (2021-05-12)##### Bug Fixes-   executemany rowcount only reflected the last execution ([#&#8203;660](https://www.github.com/googleapis/python-bigquery/issues/660)) ([aeadc8c](https://www.github.com/googleapis/python-bigquery/commit/aeadc8c2d614bb9f0883ec901fca48930f3aaf19))</details>---### Configuration📅 **Schedule**: At any time (no schedule defined).🚦 **Automerge**: Disabled by config. Please merge this manually once you are satisfied.♻️ **Rebasing**: Whenever PR becomes conflicted, or you tick the rebase/retry checkbox.🔕 **Ignore**: Close this PR and you won't be reminded about this update again.--- - [ ] <!-- rebase-check -->If you want to rebase/retry this PR, check this box.---This PR has been generated by [WhiteSource Renovate](https://renovate.whitesourcesoftware.com). View repository job log [here](https://app.renovatebot.com/dashboard#github/googleapis/python-bigquery).

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* feat: add support for Parquet optionsFor load jobs and external tables config.* Simplify ParquetOptions.to_api_repr()Co-authored by Tres Seaver.* Expose ParquetOptions in top level namespace* Parquet options should be reflected in options

Co-authored-by: release-please[bot] <55107282+release-please[bot]@users.noreply.github.com>