enable benchmark job, update get gke creds method

.github/workflows/deploy.yml

@@ -113,7 +113,7 @@ jobs:
 
   run-benchmark:
     name: Run benchmarks tests
-    if: ${{ false }}  # disable for now
+    # if: ${{ false }}  # disable for now
     runs-on: ubuntu-latest
     permissions:
       contents: 'read'
@@ -140,6 +140,7 @@ jobs:
         with:
           cluster_name: 'immutable-prod'
           location: 'us-central1'
+          use_auth_provider: true
 
       - name: Run benchmark script
         env:
@@ -165,7 +166,7 @@ jobs:
     permissions:
       contents: 'read'
       id-token: 'write'
-    # needs: run-benchmark
+    needs: run-benchmark
     steps:
       - name: Checkout sources
         uses: actions/checkout@v4