Bump google-auth-oauthlib from 0.4.5 to 0.4.6 (#1593)

Bumps [google-auth-oauthlib](https://github.com/GoogleCloudPlatform/google-auth-library-python-oauthlib) from 0.4.5 to 0.4.6.
- [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@v0.4.5...v0.4.6)

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

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

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

requirements-base.txt

@@ -103,7 +103,7 @@ google-auth==1.28.0
     #   google-auth-oauthlib
 google-auth-httplib2==0.1.0
     # via google-api-python-client
-google-auth-oauthlib==0.4.5
+google-auth-oauthlib==0.4.6
     # via -r requirements-base.in
 googleapis-common-protos==1.53.0
     # via google-api-core