Installing the master branch / latest release of PHPCompatibilityWP will use PHPCompatibility ^9.0.

It would be useful to be able to install a (temporary) version of PHPCompatibilityWP that would use the dev-develop branch of PHPComapatibility, so that sniffs with some PHP 8 focus can be used.

What's the best way of providing that?
(Either as a new branch here, or instructions in the readme on how users can adapt their project / global install)