python313Packages.pynfsclient: disable on > 3.13

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

···
   lib,
   buildPythonPackage,
   fetchPypi,
+  pythonAtLeast,
   setuptools,
 }:
 
···
   pname = "pynfsclient";
   version = "0.1.5";
   pyproject = true;
+
+  disabled = pythonAtLeast "3.13";
 
   src = fetchPypi {
     pname = "pyNfsClient";