libfilezilla: 0.12.2 -> 0.12.3

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

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

These checks were done:

- built on NixOS

- 0 of 0 passed binary check by having a zero exit code.
- 0 of 0 passed binary check by having the new version present in output.
- found 0.12.3 with grep in /nix/store/lnachvvi16drxzbfhcn8qwq5y1b0zz7p-libfilezilla-0.12.3
- directory tree listing: https://gist.github.com/7e151bf94cbf478496df9bee90494f78
- du listing: https://gist.github.com/c3f30a344f3a9f315027869969153779