.github: Fix sccache for macOS workflows on push (#68094)
Summary:
Pull Request resolved: https://github.com/pytorch/pytorch/pull/68094
Turns out sccache was not getting activated properly on master pushes so
this should help resolve that
Signed-off-by: Eli Uriegas <eliuriegas@fb.com>
Test Plan: Imported from OSS
Reviewed By: suo
Differential Revision: D32299636
Pulled By: seemethere
fbshipit-source-id: 5f1be98dffdb202d3c11b6ceb2b49af235e1f91b
