Lack of responses progress for PRs in GitHub actions repositories

[jsoref]

I understand people are busy, but does GitHub have provisions to make sure PRs to its repositories are reviewed:

actions/labeler#278 -- The contributing guide for that repository doesn't list any special steps. -- I don't want to @ people because I know that GitHub managers do not like that behavior.
actions/checkout#465 -- this repository doesn't have a contributing file

There are more...
https://github.com/pulls?q=is%3Aopen+is%3Apr+author%3Ajsoref+archived%3Afalse+user%3Aactions