Upload hhvm_clang universal packages as GitHub Action artifacts (#9229)
Summary:
This PR uploads both `hhvm.deb` and `hhvm_clang.deb` as GitHub Action artifacts, while only `hhvm.deb` is uploaded to the apt repository.
This PR is required by https://github.com/facebook/hhvm/issues/9227, to download and test both universal deb packages.
Pull Request resolved: https://github.com/facebook/hhvm/pull/9229
Test Plan: The GitHub Action page for this PR should include both `hhvm.deb` and `hhvm_clang.deb` as GitHub Action artifacts.
Reviewed By: alexeyt
Differential Revision:
D39860904
Pulled By: Atry
fbshipit-source-id:
151674b030ba3cc028ca29b6b3e53ee76582794e