drawio: add meta.changelog

pkgs/applications/graphics/drawio/default.nix

@@ -88,6 +88,7 @@ stdenv.mkDerivation rec {
     description = "A desktop application for creating diagrams";
     homepage = "https://about.draw.io/";
     license = licenses.asl20;
+    changelog = "https://github.com/jgraph/drawio-desktop/releases/tag/v${version}";
     maintainers = with maintainers; [ danieldk ];
     platforms = [ "x86_64-linux" ];
   };