Don't use librarian-puppet-maestrodev

I saw @martyn switched from using the `librarian-puppet` to the `librarian-puppet-maestrodev` gem.
The latter's repo says:
> Since 0.9.11.6 this fork is no longer used, as I am committing directly to rodjek's librarian-puppet and pushing to librarian-puppet
> librarian-puppet-maestrodev 0.9.11.6 is effectively the same as librarian-puppet 0.9.11

As far as I understand the maintainer of the `-maestrodev`-fork is now committing to the original repo.
If there's a problem in `librarian-puppet` I think you should fix it upstream?

What do you think?