Bump google-auth-oauthlib from 1.4.0 to 1.4.1

Bumps [google-auth-oauthlib](https://github.com/googleapis/google-cloud-python) from 1.4.0 to 1.4.1.
- [Release notes](https://github.com/googleapis/google-cloud-python/releases)
- [Changelog](https://github.com/googleapis/google-cloud-python/blob/main/packages/gcp-sphinx-docfx-yaml/CHANGELOG.md)
- [Commits](googleapis/google-cloud-python@google-auth-oauthlib-v1.4.0...google-auth-oauthlib-v1.4.1)

---
updated-dependencies:
- dependency-name: google-auth-oauthlib
  dependency-version: 1.4.1
  dependency-type: direct:production
  update-type: version-update:semver-patch
...

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

Author: dependabot[bot]

requirements.txt

@@ -1,4 +1,4 @@
-google-auth-oauthlib==1.4.0
+google-auth-oauthlib==1.4.1
 google-auth-httplib2==0.4.0
 google-api-python-client>=2.198.0,<3.0.0
 google-cloud-bigquery>=3.42.2,<4.0.0