Your requirements could not be resolved to an installable set of packages. Problem 1 - Root composer.json requires nikic/php-parser ^5.1 -> satisfiable by nikic/php-parser[v5.1.0]. - nikic/php-parser v5.1.0 requires php >=7.4 -> your php version (7.3.33) does not satisfy that requirement. Problem 2 - phpunit/phpunit[9.6.12, ..., 9.6.x-dev] require phpunit/php-code-coverage ^9.2.28 -> satisfiable by phpunit/php-code-coverage[9.2.28, ..., 9.2.x-dev]. - phpunit/phpunit[9.5.16, ..., 9.6.11] require phpunit/php-code-coverage ^9.2.13 -> satisfiable by phpunit/php-code-coverage[9.2.13, ..., 9.2.x-dev]. - phpunit/phpunit[9.5.10, ..., 9.5.14] require phpunit/php-code-coverage ^9.2.7 -> satisfiable by phpunit/php-code-coverage[9.2.7, ..., 9.2.x-dev]. - phpunit/phpunit[9.5.0, ..., 9.5.9] require phpunit/php-code-coverage ^9.2.3 -> satisfiable by phpunit/php-code-coverage[9.2.3, ..., 9.2.x-dev]. - phpunit/php-code-coverage[9.2.30, ..., 9.2.x-dev] require nikic/php-parser ^4.18 || ^5.0 -> satisfiable by nikic/php-parser[v5.1.0]. - phpunit/php-code-coverage[9.2.3, ..., 9.2.6] require nikic/php-parser ^4.10.2 -> found nikic/php-parser[v4.10.2, ..., 4.x-dev] but it conflicts with your root composer.json require (^5.1). - phpunit/php-code-coverage 9.2.7 requires nikic/php-parser ^4.12.0 -> found nikic/php-parser[v4.12.0, ..., 4.x-dev] but it conflicts with your root composer.json require (^5.1). - phpunit/php-code-coverage[9.2.8, ..., 9.2.15] require nikic/php-parser ^4.13.0 -> found nikic/php-parser[v4.13.0, ..., 4.x-dev] but it conflicts with your root composer.json require (^5.1). - phpunit/php-code-coverage[9.2.16, ..., 9.2.24] require nikic/php-parser ^4.14 -> found nikic/php-parser[v4.14.0, ..., 4.x-dev] but it conflicts with your root composer.json require (^5.1). - phpunit/php-code-coverage[9.2.25, ..., 9.2.29] require nikic/php-parser ^4.15 -> found nikic/php-parser[v4.15.0, ..., 4.x-dev] but it conflicts with your root composer.json require (^5.1). - nikic/php-parser v5.1.0 requires php >=7.4 -> your php version (7.3.33) does not satisfy that requirement. - Root composer.json requires phpunit/phpunit ^9.5 -> satisfiable by phpunit/phpunit[9.5.0, ..., 9.6.x-dev].

Process completed with exit code 2.

The following actions uses node12 which is deprecated and will be forced to run on node16: actions/checkout@v2. For more info: https://github.blog/changelog/2023-06-13-github-actions-all-actions-will-run-on-node16-instead-of-node12-by-default/