misc/far2l: update to the latest tagged snapshot (v2021-12-04_alpha)

wxWidgets-based graphical backend is now factored out as a separate
module. Once we get subpackages, it should be packaged separately,
so the main port would not have to pull this heavy dependency which
could be useful in pure console environments (e.g. on servers).

Inspired by: https://habr.com/ru/post/593451/