python311Packages.immutables: add changelog to meta

pkgs/development/python-modules/immutables/default.nix

···
   meta = with lib; {
     description = "An immutable mapping type";
     homepage = "https://github.com/MagicStack/immutables";
+    changelog = "https://github.com/MagicStack/immutables/releases/tag/v${version}";
     license = with licenses; [ asl20 ];
     maintainers = with maintainers; [ catern ];
   };