chore(configure_release_please): Allow workflow to be trigged manually (googleapis#14414)

Author: parthea

.github/workflows/configure_release_please.yml

@@ -23,6 +23,9 @@ on:
     branches:
       - main
 
+  # Allows you to run this workflow manually from the Actions tab
+  workflow_dispatch:      
+
 permissions:
   contents: read