Bump oauthlib from 3.2.0 to 3.2.1 in /k8s/monitoring

Bumps [oauthlib](https://github.com/oauthlib/oauthlib) from 3.2.0 to 3.2.1.
- [Release notes](https://github.com/oauthlib/oauthlib/releases)
- [Changelog](https://github.com/oauthlib/oauthlib/blob/master/CHANGELOG.rst)
- [Commits](oauthlib/oauthlib@v3.2.0...v3.2.1)

---
updated-dependencies:
- dependency-name: oauthlib
  dependency-type: indirect
...

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