This request that requires has been sitting for over a month.
I’ve tired commenting in the request to get some movement but no response.
To be fair, you only commented yesterday. In any case, once your PR can’t be automerged you should generally either push a fix (so that it can be automerged) or explain why it’s fine as is.
As for your question who to contact, if you really think that it’s necessary to speed things up, you might want to post on Slack in #pkg-registration.