qbittorrent: 4.0.4 -> 4.1.0

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

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

These checks were done:

- built on NixOS
- Warning: no binary found that responded to help or version flags. (This warning appears even if the package isn't expected to have binaries.)
- found 4.1.0 with grep in /nix/store/dyvbm73pl2qs0khv1yzyfsxsyf8kx7yi-qbittorrent-4.1.0
- directory tree listing: https://gist.github.com/a5b770d088c453aa2a25dc90cfc3c348