python3Packages.jsonpath-ng: temporary use setuptools format

Too many rebuilds to merge this to master otherwise, but should be
updated to use the PEP517 build system.

pkgs/development/python-modules/jsonpath-ng/default.nix

···
 buildPythonPackage rec {
   pname = "jsonpath-ng";
   version = "1.7.0";
+  format = "setuptools";
+  # TODO: typo; change to pyproject = true;
   pypropject = true;
 
   disabled = pythonOlder "3.8";