rebase (#3)

* chore(deps): update rust crate num-bigint to 0.4.4

* Remove the author copyright notices

from files missed by uutils#5184

---------

Co-authored-by: renovate[bot] <29139614+renovate[bot]@users.noreply.github.com>
Co-authored-by: Daniel Hofstetter <[email protected]>
Co-authored-by: Sylvestre Ledru <[email protected]>