[v7r3] Fix: reintroducing Staging to Checking transition · DIRACGrid/DIRAC@99bb360

Process completed with exit code 2.

The 'master' branch is deprecated and will be removed from the repository in the future. Please ensure your action is using the latest version, or point it to the 'main' branch. "conda-incubator/setup-miniconda@main"

Mamba support is still experimental and can result in differently solved environments!