re-enacted dependabot auto-merge

Signed-off-by: Frederic BIDON <fredbi@yahoo.com>

Author: fredbi

.github/workflows/auto-merge.yml

@@ -8,7 +8,7 @@ permissions:
 jobs:
   dependabot:
     runs-on: ubuntu-latest
-    if: github.actor == 'dependabot[bot]'
+    if: github.event.pull_request.user.login == 'dependabot[bot]'
     steps:
       - name: Dependabot metadata
         id: metadata