Fix yaml indentation in deploy-staging

Author: catarak

.github/workflows/deploy-staging.yml

@@ -48,9 +48,9 @@ jobs:
       # Get the GKE credentials so we can deploy to the cluster
       - uses: google-github-actions/get-gke-credentials@v0.2.1
         with:
-        cluster_name: ${{ env.GKE_CLUSTER }}
-        location: ${{ env.GKE_ZONE }}
-        credentials: ${{ secrets.GKE_SA_KEY }}
+          cluster_name: ${{ env.GKE_CLUSTER }}
+          location: ${{ env.GKE_ZONE }}
+          credentials: ${{ secrets.GKE_SA_KEY }}
 
         # Set up kustomize
       - name: Set up Kustomize