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] <[email protected]>

.github/workflows/linkcheck.yml

@@ -24,4 +24,4 @@ jobs:
         run: tox -e docs build -- -b linkcheck
 
       - name: Keepalive Workflow
-        uses: gautamkrishnar/keepalive-workflow@v1
+        uses: gautamkrishnar/keepalive-workflow@v2