nixos/hardened: blacklist old filesystems (#70482)

The rationale for this is that old filesystems have recieved little scrutiny
wrt. security relevant bugs.

Lifted from OpenSUSE[1].

[1]: https://github.com/openSUSE/suse-module-tools/pull/5/commits/8cb42fb6658f210cb8c955d584a65f7b041c0575



Co-Authored-By: Renaud <c0bw3b@users.noreply.github.com>