Your requirements could not be resolved to an installable set of packages. Problem 1 - vimeo/psalm dev-master requires nikic/php-parser ^5.0.0 -> found nikic/php-parser[dev-master, v5.0.0alpha1, ..., 5.0.x-dev (alias of dev-master)] but it conflicts with your root composer.json require (^4.2). - vimeo/psalm 6.x-dev is an alias of vimeo/psalm dev-master and thus requires it to be installed too. - Root composer.json requires vimeo/psalm 6.x-dev -> satisfiable by vimeo/psalm[6.x-dev (alias of dev-master)]. Use the option --with-all-dependencies (-W) to allow upgrades, downgrades and removals for packages currently locked to specific versions.

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/.