Update nccl to 2.4.8-1 (#23186)
Summary:
Fixes https://github.com/pytorch/pytorch/issues/23016
Pull Request resolved: https://github.com/pytorch/pytorch/pull/23186
Differential Revision: D16438723
Pulled By: soumith
fbshipit-source-id: ff4f5b9c7383b92e5cf2053a87caf2ac11be7aeb
