Update update-pr-branches.yml

.github/workflows/update-pr-branches.yml

@@ -1,6 +1,18 @@
 name: Update PR Branches
 
 on:
+    push:
+        branches: main
+        paths:
+            - "tests/*"
+            - ".github/workflows/ci.yml"
+            - ".github/workflows/pr.yml"
+            - "util/check-pr-template.cjs"
+            - "util/disallowed-cnames.json"
+            - "util/internal.json"
+            - "util/reserved.json"
+            - "util/trusted.json"
+
     workflow_dispatch:
 
 jobs: