chore(deps): Bump google-auth-oauthlib in /3rdparty/py

Bumps [google-auth-oauthlib](https://github.com/GoogleCloudPlatform/google-auth-library-python-oauthlib) from 1.2.2 to 1.2.3.
- [Release notes](https://github.com/GoogleCloudPlatform/google-auth-library-python-oauthlib/releases)
- [Changelog](https://github.com/googleapis/google-auth-library-python-oauthlib/blob/main/CHANGELOG.md)
- [Commits](googleapis/google-auth-library-python-oauthlib@v1.2.2...v1.2.3)

---
updated-dependencies:
- dependency-name: google-auth-oauthlib
  dependency-version: 1.2.3
  dependency-type: direct:production
  update-type: version-update:semver-patch
...

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

Author: dependabot[bot]

3rdparty/py/requirements-all.txt

@@ -12,7 +12,7 @@ environs[django]==11.2.1
 google-api-python-client==2.185.0
 google-auth==2.42.0
 google-auth-httplib2==0.2.0
-google-auth-oauthlib==1.2.2
+google-auth-oauthlib==1.2.3
 greenlet==3.2.4
 gunicorn[gevent, setproctitle]==23.0.0
 html2text==2025.4.15