Only verify if the required checks are green

[ochosi]

While we do have a CI ignore list (#38) it would be nice to only check whether the required checks are green.

There's an API that may enable us to do it (though my initial research made it look like this is more work than it should be):
https://docs.github.com/en/rest/branches/branch-protection?apiVersion=2022-11-28#get-status-checks-protection