pip stable: update google-auth-oauthlib requirement

Updates the requirements on [google-auth-oauthlib](https://github.com/GoogleCloudPlatform/google-auth-library-python-oauthlib) to permit the latest version.
- [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@v1.2.0...v1.2.1)

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

Signed-off-by: dependabot[bot] <[email protected]>

requirements.txt

@@ -1,7 +1,7 @@
 # google sheets api
 google-api-python-client~=2.136.0
 google-auth-httplib2~=0.2.0
-google-auth-oauthlib~=1.2.0
+google-auth-oauthlib~=1.2.1
 
 # files
 platformdirs~=4.2.2