build: bump azure/k8s-set-context from 3 to 4 (#78)

Bumps [azure/k8s-set-context](https://github.com/azure/k8s-set-context) from 3 to 4.
- [Release notes](https://github.com/azure/k8s-set-context/releases)
- [Changelog](https://github.com/Azure/k8s-set-context/blob/main/CHANGELOG.md)
- [Commits](Azure/k8s-set-context@v3...v4)

---
updated-dependencies:
- dependency-name: azure/k8s-set-context
  dependency-type: direct:production
  update-type: version-update:semver-major
...

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

.github/workflows/build-prod.yml

@@ -40,7 +40,7 @@ jobs:
 
     steps:
       - name: Set up kubectl
-        uses: azure/k8s-set-context@v3
+        uses: azure/k8s-set-context@v4
         with:
           kubeconfig: ${{ secrets.KUBECONFIG }}
         env: