Change the author for PR merge

I'm not the one merging these PRs.

.github/workflows/i18n-automerge.yml

@@ -65,7 +65,7 @@ jobs:
             SUBJECT="i18n updates ($LOCALES_CHANGED)"
 
             PR_NUMBER=$(echo ${{ github.event.pull_request.number }})
-            gh pr merge $PR_NUMBER --squash --subject "$SUBJECT" || true
+            gh pr merge $PR_NUMBER --author "github-actions[bot]@users.noreply.github.com" --squash --subject "$SUBJECT" || true
           fi
         env:
           GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}