fix: use charmed kubernetes actions operator (#113)

to be consistent in all of our repos, use charmed-kubernetes/actions-operator@main in Setup operator environment step

.github/workflows/integrate.yaml

@@ -55,19 +55,14 @@ jobs:
       - name: Check out code
         uses: actions/checkout@v3
       - name: Setup operator environment
-        uses: claudiubelu/actions-operator@18ebf92ae3043bd3dd15238e5d9b662d7ba08daf
+        uses: charmed-kubernetes/actions-operator@main
         with:
           provider: microk8s
           channel: 1.24/stable
           # Pinned until this bug is resolved: https://bugs.launchpad.net/juju/+bug/1992833
           bootstrap-options: "--agent-version=2.9.34"
           microk8s-addons: "dns storage rbac metallb:10.64.140.43-10.64.140.49"
 
-      # TODO: Remove once the actions-operator does this automatically
-      - name: Configure kubectl
-        run: |
-          sg microk8s -c "microk8s config > ~/.kube/config"
-
       - name: Build and test
         run: |
           sg microk8s -c "tox -vve integration -- --model testing"