ethtool: 4.15 -> 4.16

Semi-automatic update generated by https://github.com/ryantm/nixpkgs-update tools.

This update was made based on information from https://repology.org/metapackage/ethtool/versions.

These checks were done:

- built on NixOS
- ran ‘/nix/store/gaiqa1ygxahd49bpb8zzc7fp4i1mml63-ethtool-4.16/bin/ethtool -h’ got 0 exit code
- ran ‘/nix/store/gaiqa1ygxahd49bpb8zzc7fp4i1mml63-ethtool-4.16/bin/ethtool --help’ got 0 exit code
- ran ‘/nix/store/gaiqa1ygxahd49bpb8zzc7fp4i1mml63-ethtool-4.16/bin/ethtool --version’ and found version 4.16
- found 4.16 with grep in /nix/store/gaiqa1ygxahd49bpb8zzc7fp4i1mml63-ethtool-4.16
- directory tree listing: https://gist.github.com/03539f0a0b1a6c9a35f832b19650ba47