Your requirements could not be resolved to an installable set of packages. Problem 1 - pestphp/pest v2.16.0 requires pestphp/pest-plugin-arch ^2.3.1 -> satisfiable by pestphp/pest-plugin-arch[v2.3.1, v2.3.2, v2.3.3, 2.x-dev] from composer repo (https://repo.packagist.org) but pestphp/pest-plugin-arch is the root package and cannot be modified. See https://getcomposer.org/dep-on-root for details and assistance. - pestphp/pest[v2.16.1, ..., 2.x-dev] require pestphp/pest-plugin-arch ^2.3.3 -> satisfiable by pestphp/pest-plugin-arch[v2.3.3, 2.x-dev] from composer repo (https://repo.packagist.org) but pestphp/pest-plugin-arch is the root package and cannot be modified. See https://getcomposer.org/dep-on-root for details and assistance. - Root composer.json requires pestphp/pest ^2.16.0 -> satisfiable by pestphp/pest[v2.16.0, ..., 2.x-dev].

Process completed with exit code 2.

Your requirements could not be resolved to an installable set of packages. Problem 1 - pestphp/pest v2.16.0 requires pestphp/pest-plugin-arch ^2.3.1 -> satisfiable by pestphp/pest-plugin-arch[v2.3.1, v2.3.2, v2.3.3, 2.x-dev] from composer repo (https://repo.packagist.org) but pestphp/pest-plugin-arch is the root package and cannot be modified. See https://getcomposer.org/dep-on-root for details and assistance. - pestphp/pest[v2.16.1, ..., 2.x-dev] require pestphp/pest-plugin-arch ^2.3.3 -> satisfiable by pestphp/pest-plugin-arch[v2.3.3, 2.x-dev] from composer repo (https://repo.packagist.org) but pestphp/pest-plugin-arch is the root package and cannot be modified. See https://getcomposer.org/dep-on-root for details and assistance. - Root composer.json requires pestphp/pest ^2.16.0 -> satisfiable by pestphp/pest[v2.16.0, ..., 2.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/