Bump azure/aks-set-context from 3 to 4

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

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

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

.github/workflows/test_docker_aks.yaml

@@ -33,7 +33,7 @@ jobs:
       with:
        creds: ${{ secrets.AZURE_AKS }}
 
-    - uses: azure/aks-set-context@v3
+    - uses: azure/aks-set-context@v4
       with:
        resource-group: kubernetes
        cluster-name: microservices