Your requirements could not be resolved to an installable set of packages. Problem 1 - phpunit/phpunit dev-main requires php >=8.2 -> your php version (8.1.27) does not satisfy that requirement. - phpunit/phpunit 11.1.x-dev is an alias of phpunit/phpunit dev-main and thus requires it to be installed too. - Root composer.json requires phpunit/phpunit ^11.0.0 -> satisfiable by phpunit/phpunit[11.0.0, 11.0.1, 11.0.x-dev, 11.1.x-dev (alias of dev-main)]. Use the option --with-all-dependencies (-W) to allow upgrades, downgrades and removals for packages currently locked to specific versions.

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