greenwave: disabling f39 gating till we can get a compose done
    
    F39 updates can't pass testing fully till we have a new compose
    and can build new non-Rawhide base images, but we need some
    updates that are currently pending to go in the compose. It's
    a catch-22, just disabling gating till this is sorted seems
    like the least worst option.
    
    Signed-off-by: Adam Williamson <awilliam@redhat.com>