lynis: 2.6.4 -> 2.6.5

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.

These checks were done:

- built on NixOS
- /nix/store/nbrk6fjsbanqgx89v0mwgq9x6cqkwx6p-lynis-2.6.5/bin/lynis passed the binary check.
- /nix/store/nbrk6fjsbanqgx89v0mwgq9x6cqkwx6p-lynis-2.6.5/bin/.lynis-wrapped passed the binary check.
- 2 of 2 passed binary check by having a zero exit code.
- 2 of 2 passed binary check by having the new version present in output.
- found 2.6.5 with grep in /nix/store/nbrk6fjsbanqgx89v0mwgq9x6cqkwx6p-lynis-2.6.5
- directory tree listing: https://gist.github.com/4ec2eae2a408cbec08c7f34ea3d85e66
- du listing: https://gist.github.com/f8d9c962be7ba2b02df3ad9111a622ae