See release notes here:
https://github.com/NomicFoundation/hardhat/releases/tag/hardhat%402.9.0

This is a performance release, so it is good to upgrade here
to improve the time of CI. The compilation happens in parallel
with this release, as well as tests being able to be ran in parallel.

We do not make use of any forked network tests currently, but
this PR does help to speed up that usecase as well.