Change logging option to CLOUD_LOGGING_ONLY

Updated logging options to send logs directly to Cloud Logging.

cloud_build/flutter_agy_docker/orchestrator.yaml

diff --git a/cloud_build/flutter_agy_docker/orchestrator.yaml b/cloud_build/flutter_agy_docker/orchestrator.yaml
index 92ee10e..2c362be 100644
--- a/cloud_build/flutter_agy_docker/orchestrator.yaml
+++ b/cloud_build/flutter_agy_docker/orchestrator.yaml
@@ -38,3 +38,8 @@
 
 substitutions:
   _CHANNEL: "stable"
+
+# Force Cloud Build to send logs directly to Cloud Logging
+# instead of an autogenerated GCS bucket
+options:
+  logging: CLOUD_LOGGING_ONLY