Similarly to what we did in #563, I think we should upstream the package definition of [django-rest-knox](https://github.com/NixOS/nix-security-tracker/blob/d2609982df1fc2a3978707ea69ff8199e66c68db/nix/overlay.nix#L15-L32) in nixpkgs
Similarly to what we did in #563, I think we should upstream the package definition of django-rest-knox in nixpkgs