leocad: 18.02 -> 19.07.1

Semi-automatic update generated by
https://github.com/ryantm/nixpkgs-update tools. This update was made
based on information from
https://repology.org/metapackage/leocad/versions

pkgs/applications/graphics/leocad/default.nix

@@ -7,13 +7,13 @@ set the variable LEOCAD_LIB=/path/to/libs/ or use option -l /path/to/libs/
 
 stdenv.mkDerivation rec {
   name = "leocad-${version}";
-  version = "18.02";
+  version = "19.07.1";
 
   src = fetchFromGitHub {
     owner = "leozide";
     repo = "leocad";
     rev = "v${version}";
-    sha256 = "0rb4kjyrr9ry85cfpbk52l19vvwn7lrh2kmj2lwq531smnygn5m3";
+    sha256 = "02kv1m18g6s4dady9jv4sjivfkrp192bmdw2a3d9lzlp60zks0p2";
   };
 
   nativeBuildInputs = [ qmake4Hook ];