Add token for GitHub CLI (#152)

Author: charleshofer

.github/workflows/rocm-open-upstream-pr.yml

@@ -36,5 +36,7 @@ jobs:
     runs-on: ubuntu-latest
     steps:
       - name: Leave comment on old PR
+        env:
+          GH_TOKEN: ${{ github.token }}
         run: gh pr comment ${{ github.event.pull_request.number }} --repo rocm/jax --body ${{ needs.open-upstream.outputs.new-pr-link.link }}