Your requirements could not be resolved to an installable set of packages. Problem 1 - Root composer.json requires typo3/testing-framework ^6.16.7 -> satisfiable by typo3/testing-framework[6.16.7, 6.16.8, 6.16.9]. - typo3/testing-framework[6.16.7, ..., 6.16.9] require typo3/cms-core 10.*.*@dev || 11.*.*@dev -> found typo3/cms-core[v10.0.0, ..., 10.4.x-dev, v11.0.0, ..., 11.5.x-dev] but it conflicts with your root composer.json require (^12.2.0 || 12.3.x-dev || dev-main).

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, actions/cache@v1. For more info: https://github.blog/changelog/2023-06-13-github-actions-all-actions-will-run-on-node16-instead-of-node12-by-default/