fix: run actions in release PRs (#997)

PRs created via Github actions bot cannot run Github actions.
https://docs.github.com/en/actions/security-for-github-actions/security-guides/automatic-token-authentication#using-the-github_token-in-a-workflow

We need a token with more permissions to trigger those actions for
release PRs

.github/workflows/release.yml

@@ -16,6 +16,6 @@ jobs:
     steps:
       - uses: googleapis/release-please-action@v4
         with:
-          token: ${{ secrets.GITHUB_TOKEN }}
+          token: ${{ secrets.GH_TOKEN_RELEASES }}
           config-file: release-please-config.json
           manifest-file: release-please-manifest.json