smenu: 0.9.11 -> 0.9.13

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

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

These checks were done:

- built on NixOS
- /nix/store/d1fp4j713cffpq0kkvi90aqh0bh6pd4d-smenu-0.9.13/bin/smenu passed the binary check.
- 1 of 1 passed binary check by having a zero exit code.
- 1 of 1 passed binary check by having the new version present in output.
- found 0.9.13 with grep in /nix/store/d1fp4j713cffpq0kkvi90aqh0bh6pd4d-smenu-0.9.13
- directory tree listing: https://gist.github.com/26b5e2b7abfe62fcfd01cdbf1c27f655
- du listing: https://gist.github.com/ff013902ab9eca9065e3794daccf7700