Disable staging Spanner tests on release (#1808)

Signed-off-by: Jeffrey Kinard <[email protected]>

.github/workflows/release.yml

@@ -81,14 +81,16 @@ jobs:
         --it-spanner-host="https://staging-wrenchworks.sandbox.googleapis.com/" \
         --it-release=true \
         --it-retry-failures=2
+    # TODO(https://github.com/GoogleCloudPlatform/DataflowTemplates/issues/1807) - Remove once Staging Spanner tests
+    #   are fixed
     - name: Run Integration Tests
       run: |
         ./cicd/run-it-tests \
         --it-region="us-central1" \
         --it-project="cloud-teleport-testing" \
         --it-artifact-bucket="cloud-teleport-testing-it-gitactions" \
         --it-private-connectivity="datastream-private-connect-us-central1" \
-        --it-spanner-host="https://staging-wrenchworks.sandbox.googleapis.com/" \
+        --it-spanner-host="https://batch-spanner.googleapis.com" \
         --it-release=true \
         --it-retry-failures=2
     - name: Upload Unit Tests Site Report