Use CUDA 11.8 versions as the default (#1652)
Summary:
Use CUDA 11.8 as the default as CUDA 11.7 is being deprecated.
Pull Request resolved: https://github.com/pytorch/benchmark/pull/1652
Reviewed By: atalman
Differential Revision: D45871548
Pulled By: xuzhao9
fbshipit-source-id: 1b32ec5c078d81dbf496f263ad27a1794841fdcd