Bump requests from 2.27.1 to 2.28.0

Bumps [requests](https://github.com/psf/requests) from 2.27.1 to 2.28.0.
- [Release notes](https://github.com/psf/requests/releases)
- [Changelog](https://github.com/psf/requests/blob/main/HISTORY.md)
- [Commits](psf/requests@v2.27.1...v2.28.0)

---
updated-dependencies:
- dependency-name: requests
  dependency-type: indirect
  update-type: version-update:semver-minor
...

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

docs-requirements.txt

@@ -38,7 +38,7 @@ pyparsing==3.0.9
     # via packaging
 pytz==2022.1
     # via babel
-requests==2.27.1
+requests==2.28.0
     # via sphinx
 snowballstemmer==2.2.0
     # via sphinx