Update to latest gerald-pr action

Author: somewhatabstract

.github/workflows/gerald-pr.yml

@@ -18,7 +18,7 @@ jobs:
     if: github.event.action != 'edited' || github.event.changes.base != null
     runs-on: ubuntu-latest
     steps:
-      - uses: Khan/actions@gerald-pr-v2
+      - uses: Khan/actions@gerald-pr-v3
         with:
           token: ${{ secrets.GITHUB_TOKEN }}
           admin-token: ${{ secrets.KHAN_ACTIONS_BOT_TOKEN }}