use actual token

Author: jprochazk

.github/workflows/auto_approve.yml

@@ -39,7 +39,7 @@ jobs:
             curl -L \
               -X POST \
               -H "Accept: application/vnd.github+json" \
-              -H "Authorization: Bearer <YOUR-TOKEN>" \
+              -H "Authorization: Bearer ${{ secrets.GITHUB_TOKEN }}" \
               -H "X-GitHub-Api-Version: 2022-11-28" \
               https://api.github.com/repos/rerun-io/rerun/actions/runs/${{ github.run_id }}/approve
           fi