Enable agenda auto-merge

Author: benjie

.github/workflows/wgutils-automerge.yml

@@ -1,10 +1,8 @@
 name: Agenda auto-merge
 
-# First, enable branch protections, and in particular ensure the EasyCLA check is required.
-# Then, uncomment the next 3 lines:
-#on:
-#  pull_request_target:
-#    types: [synchronize, opened, reopened]
+on:
+  pull_request_target:
+    types: [synchronize, opened, reopened]
 
 permissions:
   contents: write