Dropped Digest::SHA1 dependency (RT#70531)

Hi, I've dropped unnecessary `Digest::SHA1` dependency (see [RT#70531](https://rt.cpan.org/Public/Bug/Display.html?id=70531))

This PR is part of my [advent quest](https://questhub.io/realm/perl/quest/547b4202070ccf750d00010e).

Cheers,
Sergey.