chore(deps): bump gautamkrishnar/keepalive-workflow from 1 to 2

Bumps [gautamkrishnar/keepalive-workflow](https://github.com/gautamkrishnar/keepalive-workflow) from 1 to 2.
- [Release notes](https://github.com/gautamkrishnar/keepalive-workflow/releases)
- [Commits](gautamkrishnar/keepalive-workflow@v1...v2)

---
updated-dependencies:
- dependency-name: gautamkrishnar/keepalive-workflow
  dependency-type: direct:production
  update-type: version-update:semver-major
...

Signed-off-by: dependabot[bot] <support@github.com>

.github/workflows/steward.yml

@@ -26,7 +26,7 @@ jobs:
           author-email: 111975575+scala-center-steward[bot]@users.noreply.github.com
           author-name: scala-center-steward[bot]
 
-      - uses: gautamkrishnar/keepalive-workflow@v1
+      - uses: gautamkrishnar/keepalive-workflow@v2
         if: always()
         with:
           committer_username: scala-center-steward[bot]