Your requirements could not be resolved to an installable set of packages. Problem 1 - Root composer.json requires orchestra/testbench 9.* -> satisfiable by orchestra/testbench[v9.0.0, 9.x-dev]. - pestphp/pest[v1.23.1, ..., 1.x-dev] require phpunit/phpunit ^9.6.10 -> satisfiable by phpunit/phpunit[9.6.10, ..., 9.6.x-dev]. - You can only install one version of a package, so only one of these can be installed: phpunit/phpunit[9.0.0, ..., 9.6.x-dev, 10.0.0, ..., 10.5.x-dev]. - orchestra/testbench[v9.0.0, ..., 9.x-dev] require phpunit/phpunit ^10.5 || ^11.0.1 -> satisfiable by phpunit/phpunit[10.5.0, ..., 10.5.x-dev]. - Root composer.json requires pestphp/pest ^v1.23.1 -> satisfiable by pestphp/pest[v1.23.1, 1.x-dev].

Process completed with exit code 2.

Node.js 16 actions are deprecated. Please update the following actions to use Node.js 20: actions/checkout@v2. For more information see: https://github.blog/changelog/2023-09-22-github-actions-transitioning-from-node-16-to-node-20/.