You recently used a password to access an endpoint through the GitHub API using okhttp/2.7.5. We will deprecate basic authentication using password to this endpoint soon:

https://api.github.com/repositories/155774655

We recommend using a personal access token (PAT) with the appropriate scope to access this endpoint instead. Visit https://github.com/settings/tokens for more information.

This might be just something that admins need to deal w/, but it would be helpful if there was a migration page explaining what to do from the jenkins side.

(it isn't particularly obvious to me)