Your requirements could not be resolved to an installable set of packages. Problem 1 - Root composer.json requires silverstripe/recipe-testing ^2 -> satisfiable by silverstripe/recipe-testing[2.0.0, 2.0.x-dev, 2.x-dev]. - dnadesign/silverstripe-elemental[5.0.0-alpha1, ..., 5.x-dev] require silverstripe/vendor-plugin ^2 -> satisfiable by silverstripe/vendor-plugin[2.0.0-alpha1, ..., 2.x-dev]. - Conclusion: don't install silverstripe/vendor-plugin 2.0.3 (conflict analysis result) - Root composer.json requires dnadesign/silverstripe-elemental ^5 -> satisfiable by dnadesign/silverstripe-elemental[5.0.0-alpha1, ..., 5.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, 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/