build susceptible to ZeroDivisionError

Our check will raise a ZeroDivisionError if both maintainer_and_above & total_members are 0, or if total_members is 0.

We should handle this error and SKIP accordingly.

Affects:

• 2.1.5 - limit_build_access
• 2.1.6 - authenticate_build_access
• 2.1.11 - build_env_admins
• 4.2.2 - limit_artifact_uploaders
• 4.2.6 - minimum_package_registry_admins