guitarix: 0.37.0 -> 0.37.1

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

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

These checks were done:

- built on NixOS
- /nix/store/75d02i1k7n87j0qb3sd10kxf4v70sdsc-guitarix-0.37.1/bin/guitarix passed the binary check.
- /nix/store/75d02i1k7n87j0qb3sd10kxf4v70sdsc-guitarix-0.37.1/bin/.guitarix-wrapped passed the binary check.
- 2 of 2 passed binary check by having a zero exit code.
- 0 of 2 passed binary check by having the new version present in output.
- found 0.37.1 with grep in /nix/store/75d02i1k7n87j0qb3sd10kxf4v70sdsc-guitarix-0.37.1
- directory tree listing: https://gist.github.com/85b2e7786143f42e961c06cbde8de90b
- du listing: https://gist.github.com/6ef7508c8fd678e37bed9c76a4e00f34