RELEASE_PLEASE not triggering for server

No way of triggering a gitops_server release when changes are made outside of the `gitops_server` directory.

This seems to be a limitation of the release please spec.... and is really annoying.

Either we go back to everything being part of the top level module or we create a sub package `gitops/lib` and separate `gitops_cli` and `gitops_server` directories.