Update automerge.yml

Trigger workflow

Author: david-thrower

.github/workflows/automerge.yml

@@ -5,7 +5,7 @@ name: Python application
 
 on:
   push:
-    branches: [ "main", "171-upgrade-tf-2190" ]
+    branches: [ "main", "187-upgrade-transformers" ]
 
 permissions:
   contents: read