lynis: 2.6.9 -> 2.7.0 (#50045)

* lynis: 2.6.9 -> 2.7.0

Semi-automatic update generated by
https://github.com/ryantm/nixpkgs-update tools. This update was made
based on information from
https://repology.org/metapackage/lynis/versions

* lynis: remove perl and create plugins subdir