leatherman: 1.4.1 -> 1.4.2

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

This update was made based on information from https://repology.org/metapackage/leatherman/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 1.4.2 with grep in /nix/store/r5pgnnj5j1n4p59xa4zr2nm4pjbwcwhq-leatherman-1.4.2
- directory tree listing: https://gist.github.com/c901957b585910ac947b083d026a7598
- du listing: https://gist.github.com/77c6bc02640505c537f0bd7cd13c79a6