bsakaguchi/pytorch-cu121: links for nvidia-nccl-cu11

bsakaguchi/pytorch-cu121 nvidia_nccl_cu11-2.19.3-py3-none-manylinux1_x86_64.whl
bsakaguchi/pytorch-cu121 nvidia_nccl_cu11-2.15.5-py3-none-manylinux1_x86_64.whl