ci: Split dependency check and run checks all on failures
    
    - Split the dependency check into a distinct step for each variant
    - If the dependency test failed, still run the compose base test to get
      results about it
    - Add a step at the end to make sure that if any step fails, the
      workflow still fail
    
    See: https://docs.ansible.com/ansible/latest/playbook_guide/playbooks_error_handling.html#ignoring-failed-commands
    See discussion in: https://pagure.io/workstation-ostree-config/pull-request/493