There's been a few deadlock problems with Nix 2.3, as discusssed in the
commit message of https://cl.tvl.fyi/c/depot/+/12334.
However, since the fork nothing prevents us from dropping the Nix 2.3
requirement for CI.
Change-Id: Ib00603597dbc11dc1b619fdeee264d7d519eaa02
Reviewed-on: https://cl.snix.dev/c/snix/+/30108
Autosubmit: Florian Klink <flokli@flokli.de>
Tested-by: besadii
Reviewed-by: Ryan Lahfa <masterancpp@gmail.com>