The `PL.pytorch-lightning (GPUs)` CI job is failing with `AttributeError: module 'horovod.torch' has no attribute 'nccl_built'` https://dev.azure.com/PytorchLightning/pytorch-lightning/_build/results?buildId=61024&view=logs&j=3afc50db-e620-5b81-6016-870a6976ad29&t=059bb337-5de1-5e6a-4c56-42f55a328c0e cc @tchaton @rohitgr7 @akihironitta @carmocca @borda