Bump google-auth from 2.19.1 to 2.20.0 (#705)

Bumps [google-auth](https://github.com/googleapis/google-auth-library-python) from 2.19.1 to 2.20.0.
- [Release notes](https://github.com/googleapis/google-auth-library-python/releases)
- [Changelog](https://github.com/googleapis/google-auth-library-python/blob/main/CHANGELOG.md)
- [Commits](googleapis/google-auth-library-python@v2.19.1...v2.20.0)

---
updated-dependencies:
- dependency-name: google-auth
  dependency-type: direct:production
  update-type: version-update:semver-minor
...

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Co-authored-by: dependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com>

pyproject.toml

@@ -31,7 +31,7 @@ prometheus-client = "0.17.0"
 structlog = "^23.1.0"
 colorama = "^0.4.6"
 psycopg2 = "^2.9.6"
-google-auth = "^2.19.1"
+google-auth = "^2.20.0"
 
 
 [tool.poetry.dev-dependencies]