dos2unix: 7.4.0 -> 7.4.1 (#70566)

* dos2unix: 7.4.0 -> 7.4.1

Semi-automatic update generated by
https://github.com/ryantm/nixpkgs-update tools. This update was made
based on information from
https://repology.org/metapackage/dos2unix/versions

* dos2unix: cleanup