The job was canceled because "_8_prefer-lowest" failed.

Your requirements could not be resolved to an installable set of packages. Problem 1 - Root composer.json requires phpunit/phpunit ^11.3.4 -> satisfiable by phpunit/phpunit[11.3.4, 11.3.x-dev, 11.4.x-dev]. - phpunit/phpunit[11.3.4, ..., 11.4.x-dev] require php >=8.2 -> your php version (8.0.30) does not satisfy that requirement.