Bump kubernetes from 26.1.0 to 28.1.0

Bumps [kubernetes](https://github.com/kubernetes-client/python) from 26.1.0 to 28.1.0.
- [Release notes](https://github.com/kubernetes-client/python/releases)
- [Changelog](https://github.com/kubernetes-client/python/blob/master/CHANGELOG.md)
- [Commits](kubernetes-client/python@v26.1.0...v28.1.0)

---
updated-dependencies:
- dependency-name: kubernetes
  dependency-type: direct:production
  update-type: version-update:semver-major
...

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

requirements.txt

@@ -26,10 +26,12 @@ idna==3.3
     # via requests
 iniconfig==1.1.1
     # via pytest
-kubernetes==26.1.0
+kubernetes==28.1.0
     # via -r requirements.in
 oauthlib==3.2.2
-    # via requests-oauthlib
+    # via
+    #   kubernetes
+    #   requests-oauthlib
 packaging==21.3
     # via
     #   pytest
@@ -91,6 +93,3 @@ websocket-client==1.3.2
     # via
     #   docker
     #   kubernetes
-
-# The following packages are considered to be unsafe in a requirements file:
-# setuptools