build(deps): bump azure/setup-kubectl from 2.0 to 2.1

Bumps [azure/setup-kubectl](https://github.com/azure/setup-kubectl) from 2.0 to 2.1.
- [Release notes](https://github.com/azure/setup-kubectl/releases)
- [Commits](Azure/setup-kubectl@v2.0...v2.1)

---
updated-dependencies:
- dependency-name: azure/setup-kubectl
  dependency-type: direct:production
  update-type: version-update:semver-minor
...

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

.github/workflows/test-registries.yml

@@ -17,7 +17,7 @@ jobs:
       - name: Setup AWS CLI
         uses: unfor19/install-aws-cli-action@v1
 
-      - uses: azure/setup-kubectl@v2.0
+      - uses: azure/setup-kubectl@v2.1
         with:
           version: 'v1.23.1'