Update benchmarks.yml

Author: juliagmt-google

.github/workflows/benchmarks.yml

@@ -54,6 +54,10 @@ jobs:
       - name: Check TF_CPP_MAX_VLOG_LEVEL
         working-directory: xla
         run: echo "$TF_CPP_MAX_VLOG_LEVEL"
+      - name: Wait For Connection
+        uses: google-ml-infra/actions/ci_connection@main
+        with:
+          halt-dispatch-input: ${{ inputs.halt-for-connection }}
 
       - name: Build hlo_runner_main
         working-directory: xla