build(deps): update google-auth requirement in /samples/python/psycopg3

Updates the requirements on [google-auth](https://github.com/googleapis/google-auth-library-python) to permit the latest version.
- [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@v2.36.0...v2.37.0)

---
updated-dependencies:
- dependency-name: google-auth
  dependency-type: direct:production
...

Signed-off-by: dependabot[bot] <support@github.com>

samples/python/psycopg3/requirements.txt

@@ -2,4 +2,4 @@ psycopg[binary]~=3.2.3
 testcontainers~=4.8.2
 requests==2.32.3
 google~=3.0.0
-google.auth~=2.36.0
+google.auth~=2.37.0