* build: add sync-repo-settings and change branch protection
Source-Link: googleapis/synthtool@ed8079c
Post-Processor: gcr.io/cloud-devrel-public-resources/owlbot-nodejs:latest@sha256:80bfa0c67226453b37b501be7748b2fa2a2676cfeec0012e79e3a1a8f1cbe6a3

#174)

* build(node): add feat in node post-processor to add client library version number in snippet metadata

Co-authored-by: Benjamin E. Coe <[email protected]>
Source-Link: googleapis/synthtool@d337b88
Post-Processor: gcr.io/cloud-devrel-public-resources/owlbot-nodejs:latest@sha256:d106724ad2a96daa1b8d88de101ba50bdb30b8df62ffa0aa2b451d93b4556641

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This PR contains the following updates:

| Package | Change | Age | Adoption | Passing | Confidence |
|---|---|---|---|---|---|
| [@types/mocha](https://togithub.com/DefinitelyTyped/DefinitelyTyped) | [`^8.0.4` -> `^9.0.0`](https://renovatebot.com/diffs/npm/@types%2fmocha/8.2.3/9.1.1) | [![age](https://badges.renovateapi.com/packages/npm/@types%2fmocha/9.1.1/age-slim)](https://docs.renovatebot.com/merge-confidence/) | [![adoption](https://badges.renovateapi.com/packages/npm/@types%2fmocha/9.1.1/adoption-slim)](https://docs.renovatebot.com/merge-confidence/) | [![passing](https://badges.renovateapi.com/packages/npm/@types%2fmocha/9.1.1/compatibility-slim/8.2.3)](https://docs.renovatebot.com/merge-confidence/) | [![confidence](https://badges.renovateapi.com/packages/npm/@types%2fmocha/9.1.1/confidence-slim/8.2.3)](https://docs.renovatebot.com/merge-confidence/) |

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#177)

* build: update auto-approve file to v2

Source-Link: googleapis/synthtool@19eb6fc
Post-Processor: gcr.io/cloud-devrel-public-resources/owlbot-nodejs:latest@sha256:b9e4584a1fe3c749e3c37c92497b13dce653b2e694f0261f0610eb0e15941357

* chore(main): release 1.8.1

* 🦉 Updates from OwlBot post-processor

See https://github.com/googleapis/repo-automation-bots/blob/main/packages/owl-bot/README.md

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