Update aarch64 CI badge (#39914)
Summary:
This PR added python37 and python38 badge for aarch64 build CI.
You can preview the badge here: https://github.com/wangxiyuan/pytorch/tree/update_aarch64_ci
The build job is passing now since we use CLANG instead GCC for building.
Using GCC still hit error which is mentioned in https://github.com/pytorch/pytorch/issues/33124
Related: https://github.com/pytorch/pytorch/issues/39558
Pull Request resolved: https://github.com/pytorch/pytorch/pull/39914
Differential Revision: D22068834
Pulled By: ezyang
fbshipit-source-id: d8a2ec795408850ec6eba3af7b29ddfeb3cbea38
