Your requirements could not be resolved to an installable set of packages. Problem 1 - orchestra/testbench[v5.0.0, ..., v5.17.1, v6.0.0, ..., v6.9.0] require phpunit/phpunit ^8.4 || ^9.0 -> found phpunit/phpunit[8.4.0, ..., 8.5.38, 9.0.0, ..., 9.6.19] but it conflicts with your root composer.json require (^10.0). - orchestra/testbench[v5.18.0, ..., v5.20.0, v6.13.0, ..., v6.21.1] require phpunit/phpunit ^8.4 || ^9.3.3 -> found phpunit/phpunit[8.4.0, ..., 8.5.38, 9.3.3, ..., 9.6.19] but it conflicts with your root composer.json require (^10.0). - orchestra/testbench[v6.10.0, ..., v6.12.1] require phpunit/phpunit ^8.4 || ^9.3 -> found phpunit/phpunit[8.4.0, ..., 8.5.38, 9.3.0, ..., 9.6.19] but it conflicts with your root composer.json require (^10.0). - orchestra/testbench[v6.22.0, ..., v6.43.3] require phpunit/phpunit ^8.5.21 || ^9.5.10 -> found phpunit/phpunit[8.5.21, ..., 8.5.38, 9.5.10, ..., 9.6.19] but it conflicts with your root composer.json require (^10.0). - orchestra/testbench[v7.0.0, ..., v7.41.3] require phpunit/phpunit ^9.5.10 -> found phpunit/phpunit[9.5.10, ..., 9.6.19] but it conflicts with your root composer.json require (^10.0). - Root composer.json requires orchestra/testbench ~5.0|^6.0|^7.0 -> satisfiable by orchestra/testbench[v5.0.0, ..., v5.20.0, v6.0.0, ..., v6.43.3, v7.0.0, ..., v7.41.3].

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/.