Update Keycloak CI kubeconfig handling for current cluster

.gitea/workflows/authentik-apps.yaml

@@ -30,9 +30,11 @@ jobs:
         cli_config_credentials_token: ${{ secrets.TF_API_TOKEN }}
 
     - name: Setup kubeconfig
+      env:
+        CI_KUBECONFIG: ${{ secrets.KUBECONFIG }}
       run: |
         mkdir -p ~/.kube
-        echo "${{ secrets.KUBECONFIG }}" > ~/.kube/config
+        printf '%s' "$CI_KUBECONFIG" > ~/.kube/config
         chmod 600 ~/.kube/config
 
     - name: Terraform Init