Bump google-auth-oauthlib from 0.7.1 to 1.0.0

Bumps [google-auth-oauthlib](https://github.com/GoogleCloudPlatform/google-auth-library-python-oauthlib) from 0.7.1 to 1.0.0.
- [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@v0.7.1...v1.0.0)

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

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

requirements.txt

@@ -25,7 +25,7 @@ Flask-SQLAlchemy==3.0.5
 Flask-WTF==1.1.1
 Frozen-Flask==0.15
 google-auth==2.21.0
-google-auth-oauthlib==0.7.1
+google-auth-oauthlib==1.0.0
 greenlet==2.0.2
 html5lib==1.1
 idna==3.3