Your requirements could not be resolved to an installable set of packages.
Problem 1
- Root composer.json requires chiiya/code-style-php ^3.0 -> satisfiable by chiiya/code-style-php[3.0.0, 3.0.1, 3.0.2, 3.0.3].
- chiiya/code-style-php[3.0.0, ..., 3.0.3] require php ^8.2 -> your php version (8.1.29) does not satisfy that requirement.
Problem 2
- phpunit/phpunit[11.3.0, ..., 11.4.x-dev] require php >=8.2 -> your php version (8.1.29) does not satisfy that requirement.
- Root composer.json requires phpunit/phpunit ^11.3 -> satisfiable by phpunit/phpunit[11.3.0, ..., 11.4.x-dev].