This PR speeds up CI tasks that run unit tests but do not run fuzzing.
On my machine:
$ time git clone --depth=1 https://github.com/bitcoin-core/qa-assets
Cloning into 'qa-assets'...
remote: Enumerating objects: 289750, done.
remote: Counting objects: 100% (289750/289750), done.
remote: Compressing objects: 100% (207687/207687), done.
remote: Total 289750 (delta 16863), reused 275449 (delta 12092), pack-reused 0
Receiving objects: 100% (289750/289750), 1.39 GiB | 4.79 MiB/s, done.
Resolving deltas: 100% (16863/16863), done.
Updating files: 100% (294515/294515), done.
real 7m43,417s
user 2m39,771s
sys 0m43,272s