python311Packages.cwl-upgrader: update disabled

pkgs/development/python-modules/cwl-upgrader/default.nix

···
   version = "1.2.9";
   format = "setuptools";
 
-  disabled = pythonOlder "3.7";
+  disabled = pythonOlder "3.8";
 
   src = fetchFromGitHub {
     owner = "common-workflow-language";