Librarian generate diff check failed on main branch

[github-actions]

The librarian generate diff check failed on main branch.

To keep the main branch healthy, please consider reverting the triggering change first. Once the revert is merged, you can investigate the failure and submit a new PR with the fix.

Please check the logs: https://github.com/googleapis/google-cloud-java/actions/runs/28881257052

[github-actions]

@googleapis/cloud-sdk-librarian-team The workflow failed. Workflow Run: https://github.com/googleapis/google-cloud-java/actions/runs/28881257052

[zhumin8]

Likely related to this release pr being merged in: https://github.com/googleapis/google-cloud-java/pull/13669/changes#diff-464bebf2dae71c02c30ec0ece355447da9494ccd906ffd3127e3efb9a7c50fcf

There might be a bug in release-please and librarian. Need to take a bit more time to investigate.

[zhumin8]

In the meantime, fixing in #13681

[github-actions]

The build failed again. Workflow Run: https://github.com/googleapis/google-cloud-java/actions/runs/28885382341