* chore: migrate to owl bot

* chore: use the latest post processor image

* run the post processor

* remove synth.py and synth.metadata

* attempt to fix coverage failure

* chore: raise coverage requirements to 100

* 🦉 Updates from OwlBot

Co-authored-by: Bu Sun Kim <busunkim@google.com>
Co-authored-by: Owl Bot <gcf-owl-bot[bot]@users.noreply.github.com>

Post-Processor: gcr.io/repo-automation-bots/owlbot-python:latest@sha256:9d6a2d613e2c04c07ecdb6c287e3931890f6d30266ab5ee4ee412f748dc98341

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Post-Processor: gcr.io/repo-automation-bots/owlbot-python:latest@sha256:b6169fc6a5207b11800a7c002d0c5c2bc6d82697185ca12e666f44031468cfcd

#183)

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This PR contains the following updates:

| Package | Type | Update | Change |
|---|---|---|---|
| [pre-commit/pre-commit-hooks](https://togithub.com/pre-commit/pre-commit-hooks) | repository | major | `v3.4.0` -> `v4.0.1` |

---

### Release Notes

<details>
<summary>pre-commit/pre-commit-hooks</summary>

### [`v4.0.1`](https://togithub.com/pre-commit/pre-commit-hooks/releases/v4.0.1)

[Compare Source](https://togithub.com/pre-commit/pre-commit-hooks/compare/v4.0.0...v4.0.1)

##### Fixes

-   `check-shebang-scripts-are-executable` fix entry point.
    -   [#&#8203;602](https://togithub.com/pre-commit/pre-commit-hooks/issues/602) issue by [@&#8203;Person-93](https://togithub.com/Person-93).
    -   [#&#8203;603](https://togithub.com/pre-commit/pre-commit-hooks/issues/603) PR by [@&#8203;scop](https://togithub.com/scop).

### [`v4.0.0`](https://togithub.com/pre-commit/pre-commit-hooks/releases/v4.0.0)

[Compare Source](https://togithub.com/pre-commit/pre-commit-hooks/compare/v3.4.0...v4.0.0)

##### Features

-   `check-json`: report duplicate keys.
    -   [#&#8203;558](https://togithub.com/pre-commit/pre-commit-hooks/issues/558) PR by [@&#8203;AdityaKhursale](https://togithub.com/AdityaKhursale).
    -   [#&#8203;554](https://togithub.com/pre-commit/pre-commit-hooks/issues/554) issue by [@&#8203;adamchainz](https://togithub.com/adamchainz).
-   `no-commit-to-branch`: add `main` to default blocked branches.
    -   [#&#8203;565](https://togithub.com/pre-commit/pre-commit-hooks/issues/565) PR by [@&#8203;ndevenish](https://togithub.com/ndevenish).
-   `check-case-conflict`: check conflicts in directory names as well.
    -   [#&#8203;575](https://togithub.com/pre-commit/pre-commit-hooks/issues/575) PR by [@&#8203;slsyy](https://togithub.com/slsyy).
    -   [#&#8203;70](https://togithub.com/pre-commit/pre-commit-hooks/issues/70) issue by [@&#8203;andyjack](https://togithub.com/andyjack).
-   `check-vcs-permalinks`: forbid other branch names.
    -   [#&#8203;582](https://togithub.com/pre-commit/pre-commit-hooks/issues/582) PR by [@&#8203;jack1142](https://togithub.com/jack1142).
    -   [#&#8203;581](https://togithub.com/pre-commit/pre-commit-hooks/issues/581) issue by [@&#8203;jack1142](https://togithub.com/jack1142).
-   `check-shebang-scripts-are-executable`: new hook which ensures shebang'd scripts are executable.
    -   [#&#8203;545](https://togithub.com/pre-commit/pre-commit-hooks/issues/545) PR by [@&#8203;scop](https://togithub.com/scop).

##### Fixes

-   `check-executables-have-shebangs`: Short circuit shebang lookup on windows.
    -   [#&#8203;544](https://togithub.com/pre-commit/pre-commit-hooks/issues/544) PR by [@&#8203;scop](https://togithub.com/scop).
-   `requirements-txt-fixer`: Fix comments which have indentation
    -   [#&#8203;549](https://togithub.com/pre-commit/pre-commit-hooks/issues/549) PR by [@&#8203;greshilov](https://togithub.com/greshilov).
    -   [#&#8203;548](https://togithub.com/pre-commit/pre-commit-hooks/issues/548) issue by [@&#8203;greshilov](https://togithub.com/greshilov).
-   `pretty-format-json`: write to stdout using UTF-8 encoding.
    -   [#&#8203;571](https://togithub.com/pre-commit/pre-commit-hooks/issues/571) PR by [@&#8203;jack1142](https://togithub.com/jack1142).
    -   [#&#8203;570](https://togithub.com/pre-commit/pre-commit-hooks/issues/570) issue by [@&#8203;jack1142](https://togithub.com/jack1142).
-   Use more inclusive language.
    -   [#&#8203;599](https://togithub.com/pre-commit/pre-commit-hooks/issues/599) PR by [@&#8203;asottile](https://togithub.com/asottile).

##### Breaking changes

-   Remove deprecated hooks: `flake8`, `pyflakes`, `autopep8-wrapper`.
    -   [#&#8203;597](https://togithub.com/pre-commit/pre-commit-hooks/issues/597) PR by [@&#8203;asottile](https://togithub.com/asottile).

</details>

---

### Configuration

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♻️ **Rebasing**: Renovate will not automatically rebase this PR, because other commits have been found.

🔕 **Ignore**: Close this PR and you won't be reminded about this update again.

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---

This PR has been generated by [WhiteSource Renovate](https://renovate.whitesourcesoftware.com). View repository job log [here](https://app.renovatebot.com/dashboard#github/googleapis/synthtool).
Source-Link: googleapis/synthtool@333fd90
Post-Processor: gcr.io/repo-automation-bots/owlbot-python:latest@sha256:b8c131c558606d3cea6e18f8e87befbd448c1482319b0db3c5d5388fa6ea72e3

Source-Link: googleapis/synthtool@b0eb8a8
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Source-Link: googleapis/synthtool@26558ba
Post-Processor: gcr.io/repo-automation-bots/owlbot-python:latest@sha256:99d90d097e4a4710cc8658ee0b5b963f4426d0e424819787c3ac1405c9a26719

Co-authored-by: Owl Bot <gcf-owl-bot[bot]@users.noreply.github.com>

…ies (#190)

Always unwrap to get the raw protobuf message, rather than the proto-plus wrapper.

We are back to within a few percent of the older/faster version on my comparison test.

Closes #150.

🤖 I have created a release \*beep\* \*boop\*
---
### [2.1.4](https://www.github.com/googleapis/python-datastore/compare/v2.1.3...v2.1.4) (2021-07-09)


### Performance Improvements

* further avoid using proto-plus wrapper when unmarshalling entities ([#190](https://www.github.com/googleapis/python-datastore/issues/190)) ([d0481bf](https://www.github.com/googleapis/python-datastore/commit/d0481bf8caa84a829808e7f512fda8709f38d0cc))


### Documentation

* omit mention of Python 2.7 in 'CONTRIBUTING.rst' ([#1127](https://www.github.com/googleapis/python-datastore/issues/1127)) ([#181](https://www.github.com/googleapis/python-datastore/issues/181)) ([6efde70](https://www.github.com/googleapis/python-datastore/commit/6efde70db751bf708091b24a932ab8571bd981a6))
---


This PR was generated with [Release Please](https://github.com/googleapis/release-please). See [documentation](https://github.com/googleapis/release-please#release-please).