lxqt.lxqt-l10n: 0.12.0 -> 0.13.0

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

This update was made based on information from https://repology.org/metapackage/lxqt-l10n/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.
- directory tree listing: https://gist.github.com/583bf7b46d9b7d60406ab44e9f06eb42
- du listing: https://gist.github.com/26da5523d884e68e9a772af08be299cf