Use committer email to avoid infinite loop

Author: dontcallmedom

.github/workflows/validate.yml

@@ -35,7 +35,7 @@ jobs:
         git commit -m "Update report.json, rec-track-repos.json, hr-repos.json"
         git show
     - name: Push changes
-      if: github.ref == 'refs/heads/master' && github.actor != 'dontcallmedom-bot'
+      if: github.ref == 'refs/heads/master' && github.event.commits[0].author.name != 'w3c-validate-repos-bot'
       run: |
         git remote set-url --push origin https://x-access-token:${{ secrets.W3C_GITHUB_TOKEN }}@github.com/$GITHUB_REPOSITORY
         git push origin HEAD:master