quilt: 0.67 -> 0.68

pkgs/development/tools/quilt/default.nix

···
 stdenv.mkDerivation rec {
 
   pname = "quilt";
-  version = "0.67";
+  version = "0.68";
 
   src = fetchurl {
     url = "mirror://savannah/${pname}/${pname}-${version}.tar.gz";
-    sha256 = "sha256-O+O+CYfnKmw2Rni7gn4+H8wQMitWvF8CtXZpj1UBPMI=";
+    sha256 = "sha256-/owJ3gPBBuhbNzfI8DreFHyVa3ntevSFocijhY2zhCY=";
   };
 
   nativeBuildInputs = [ makeWrapper ];