chore(deps): bump requests from 2.28.0 to 2.28.1 (#332)

Bumps [requests](https://github.com/psf/requests) from 2.28.0 to 2.28.1.
- [Release notes](https://github.com/psf/requests/releases)
- [Changelog](https://github.com/psf/requests/blob/main/HISTORY.md)
- [Commits](psf/requests@v2.28.0...v2.28.1)

---
updated-dependencies:
- dependency-name: requests
  dependency-type: direct:production
  update-type: version-update:semver-patch
...

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

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

requirements-test.txt

@@ -1,5 +1,5 @@
 iso8601==1.0.2
-requests==2.28.0
+requests==2.28.1
 securesystemslib==0.21.0
 six==1.16.0
 tuf==0.20.0