pythonPackages.ntlm-auth: 1.0.3 -> 1.4.0 to fix build

On master and 20.03, this is failing to build on `python 3.8`.

https://hydra.nixos.org/build/115517329
https://hydra.nixos.org/build/114714922



CC @NixOS/nixos-release-managers
ZHF: #80379

Co-Authored-By: Niklas Hambüchen <mail@nh2.me>