The job was canceled because "_8_3_--prefer-lowest" failed.

Your requirements could not be resolved to an installable set of packages. Problem 1 - Root composer.json requires phpstan/phpstan-phpunit ^1.3 -> satisfiable by phpstan/phpstan-phpunit[1.3.0, ..., 1.4.0]. - phpstan/phpstan-phpunit 1.3.0 requires phpstan/phpstan ^1.9.0 -> found phpstan/phpstan[1.9.0, ..., 1.12.9] but it conflicts with your root composer.json require (^2.0). - phpstan/phpstan-phpunit[1.3.5, ..., 1.3.16] require phpstan/phpstan ^1.10 -> found phpstan/phpstan[1.10.0, ..., 1.12.9] but it conflicts with your root composer.json require (^2.0). - phpstan/phpstan-phpunit[1.3.1, ..., 1.3.4] require phpstan/phpstan ^1.9.3 -> found phpstan/phpstan[1.9.3, ..., 1.12.9] but it conflicts with your root composer.json require (^2.0). - phpstan/phpstan-phpunit 1.4.0 requires phpstan/phpstan ^1.11 -> found phpstan/phpstan[1.11.0, ..., 1.12.9] but it conflicts with your root composer.json require (^2.0).