Bug Description

The PHPUnit version is too new in composer:
"phpunit/phpunit": "^8.5",

When running composer test it returns:
Looks like you're using PHPUnit 8.5.21. WordPress requires at least PHPUnit 5.7.21 and is currently only compatible with PHPUnit up to 7.x.

Steps to reproduce

1. Run composer install && composer test

Screenshots

Additional Context

This is an issue only for advance usage. There's a default way to test npm run test-php.