Update dependency phpunit/phpunit to ^13.3.0 (14.2) - #1279

Your requirements could not be resolved to an installable set of packages. Problem 1 - Root composer.json requires phpunit/phpunit ^13.3.0 -> satisfiable by phpunit/phpunit[13.3.0]. - phpunit/phpunit 13.3.0 requires phpunit/php-code-coverage ^14.3 -> satisfiable by phpunit/php-code-coverage[dev-main, 14.3.0, 14.3.x-dev (alias of dev-main)] from composer repo (https://repo.packagist.org) but phpunit/php-code-coverage 14.2.x-dev is the root package and cannot be modified. See https://getcomposer.org/dep-on-root for details and assistance.