mate.mate-themes: 3.22.16 -> 3.22.17 (#41541)

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

This update was made based on information from https://repology.org/metapackage/mate-themes/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 3.22.17 with grep in /nix/store/vnrs1vjrq1jjqff5872k2vyqnf5bj5iw-mate-themes-3.22.17
- directory tree listing: https://gist.github.com/7496d09132d21dac1574730a34586a9d
- du listing: https://gist.github.com/fae90128247da010e9abf4c845ceb824