Your requirements could not be resolved to an installable set of packages.
Problem 1
- Root composer.json requires pestphp/pest ^3.0.0 -> satisfiable by pestphp/pest[3.x-dev].
- pestphp/pest 3.x-dev requires pestphp/pest-plugin-mutate ^3.0.0 -> satisfiable by pestphp/pest-plugin-mutate[3.x-dev] from composer repo (https://repo.packagist.org) but pestphp/pest-plugin-mutate is the root package and cannot be modified. See https://getcomposer.org/dep-on-root for details and assistance.