Your requirements could not be resolved to an installable set of packages.
Problem 1
- Root composer.json requires pestphp/pest-plugin-laravel ^1.1 -> satisfiable by pestphp/pest-plugin-laravel[v1.1.0, ..., 1.x-dev].
- Conclusion: don't install illuminate/contracts v9.0.0 (conflict analysis result)
- Conclusion: don't install illuminate/contracts v8.73.0 (conflict analysis result)
- nunomaduro/larastan[1.0.0, ..., 1.x-dev] require illuminate/contracts ^6.0 || ^7.0 || ^8.0 || ^9.0 -> satisfiable by illuminate/contracts[v8.73.0, ..., 8.x-dev, v9.0.0-beta.1, ..., 9.x-dev].
- Conclusion: don't install illuminate/contracts v9.28.0 (conflict analysis result)
- Root composer.json requires nunomaduro/larastan ^1.0 -> satisfiable by nunomaduro/larastan[1.0.0, ..., 1.x-dev].