The job was canceled because "_8_1_true_--prefer-lowest" failed.

Your requirements could not be resolved to an installable set of packages. Problem 1 - Root composer.json requires phpunit/phpunit ^11.2.8 -> satisfiable by phpunit/phpunit[11.2.8, ..., 11.5.1]. - phpunit/phpunit[11.2.8, ..., 11.5.1] require php >=8.2 -> your php version (8.1.31) does not satisfy that requirement.