Install NDK 21 after GitHub update (#79024) (#79024) (#79429)
Summary:
See https://github.com/actions/virtual-environments/issues/5595
Pull Request resolved: https://github.com/pytorch/pytorch/pull/79024
Approved by: https://github.com/janeyx99
Test Plan: contbuild & OSS CI, see https://hud.pytorch.org/commit/pytorch/pytorch/0be9df4e852c0216a1de749551f16affddb63335
Reviewed By: osalpekar
Differential Revision: D36993242
Pulled By: kit1980
fbshipit-source-id: c2e76fee4eaf0b1474cb7221721cbb798c319001
Co-authored-by: Sergii Dymchenko (Meta Employee) <sdym@fb.com>
