chore(deps): bump azure/setup-kubectl from 3 to 4

Bumps [azure/setup-kubectl](https://github.com/azure/setup-kubectl) from 3 to 4.
- [Release notes](https://github.com/azure/setup-kubectl/releases)
- [Changelog](https://github.com/Azure/setup-kubectl/blob/main/CHANGELOG.md)
- [Commits](Azure/setup-kubectl@v3...v4)

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

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

Author: dependabot[bot]

.github/workflows/ci.yaml

@@ -42,7 +42,7 @@ jobs:
     steps:
       - uses: actions/checkout@v4
       - uses: actions/download-artifact@v3
-      - uses: azure/setup-kubectl@v3
+      - uses: azure/setup-kubectl@v4
       - name: "Install dependencies"
         run: |
           sudo apt-get update