Update ci.yml

Author: j5ik2o

.github/workflows/ci.yml

@@ -65,7 +65,7 @@ jobs:
         run: "${GITHUB_WORKSPACE}/.github/clean-up.sh"
   automerge:
     runs-on: ubuntu-latest
-    if: github.event_name == 'pull_request'
+    if: github.event_name == 'pull_request' && github.actor == 'j5ik2o-bot[bot]'
     needs: test
     steps:
       - name: Generate token