falkon: 3.0.0 -> 3.0.1

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

This update was made based on information from https://repology.org/metapackage/falkon/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 3.0.1 with grep in /nix/store/daa848kdkmv0l77b796h86djs0yn2wwh-falkon-3.0.1
- directory tree listing: https://gist.github.com/f0235aa275d8b64a8b8f61cf7b328049