Switch from YosysHQ action to reusable workflow (backport #2901) (#2902)

* Switch from YosysHQ action to composite action (#2901)

The YosysHQ Github Action for setting up the OSS CAD Suite is very flaky
in CI so instead we can just wget and untar the suite ourselves. It also
seems prudent to try out composite actions to avoid duplication of
installation steps.

(cherry picked from commit 75aeaed9

)

# Conflicts:
#	.github/workflows/test.yml

* Resolve backport conflicts

Co-authored-by: Jack Koenig <koenig@sifive.com>