gowitness: buildGo123Module -> buildGoModule

https://github.com/NixOS/nixpkgs/commit/49faa36ea1e8d319e7e4ca3bfd293fb09d3ee3b0 unpinned the module builder, but didn't remove its usage

pkgs/by-name/go/gowitness/package.nix

···
 {
   lib,
-  buildGo123Module,
+  buildGoModule,
   fetchFromGitHub,
 }:
 
-buildGo123Module rec {
+buildGoModule rec {
   pname = "gowitness";
   version = "3.0.5";