snd: 18.1 -> 18.2

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

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

These checks were done:

- built on NixOS
- ran `/nix/store/caxkfgbcv6kplihpx8gbivz6l5sisnv5-snd-18.2/bin/snd --help` got 0 exit code
- ran `/nix/store/caxkfgbcv6kplihpx8gbivz6l5sisnv5-snd-18.2/bin/snd --version` and found version 18.2
- ran `/nix/store/caxkfgbcv6kplihpx8gbivz6l5sisnv5-snd-18.2/bin/snd --help` and found version 18.2
- found 18.2 with grep in /nix/store/caxkfgbcv6kplihpx8gbivz6l5sisnv5-snd-18.2
- directory tree listing: https://gist.github.com/549e1eef8a929e09d72499dc97a47aa2