Your requirements could not be resolved to an installable set of packages. Problem 1 - phpunit/phpunit[9.6.0, ..., 9.6.19] require php >=7.3 -> your php version (7.0.33) does not satisfy that requirement. - Root composer.json requires phpunit/phpunit ^9.6 -> satisfiable by phpunit/phpunit[9.6.0, ..., 9.6.19].

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, actions/cache@v3. For more information see: https://github.blog/changelog/2023-09-22-github-actions-transitioning-from-node-16-to-node-20/.