fix: allow auto-merge after maintainer follow-ups

.github/workflows/dependabot-auto-merge.yml

@@ -13,7 +13,7 @@ permissions:
 
 jobs:
   enable-auto-merge:
-    if: github.actor == 'dependabot[bot]'
+    if: github.event.pull_request.user.login == 'dependabot[bot]'
     runs-on: ubuntu-latest
     steps:
       - name: Fetch Dependabot metadata