[Binary Push] Update the awscli installation, use conda install rather than brew install (#49175)
Summary:
Pull Request resolved: https://github.com/pytorch/pytorch/pull/49175
As title
ghstack-source-id: 118306312
Test Plan: CI
Reviewed By: xta0
Differential Revision: D25466577
fbshipit-source-id: 67a521947db3744695f0ab5f421483ab96d8ed9f
