python3Packages.virtualenv: 20.29.3 -> 20.30.0

https://github.com/pypa/virtualenv/blob/20.30.0/docs/changelog.rst

This commit was automatically generated using update-python-libraries.

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

···
 
 buildPythonPackage rec {
   pname = "virtualenv";
-  version = "20.29.3";
+  version = "20.30.0";
   format = "pyproject";
 
   disabled = pythonOlder "3.7";
 
   src = fetchPypi {
     inherit pname version;
-    hash = "sha256-leOUA/zzlArEW8cXWX26FhELdFBhMYRdm2h9XnPZR6w=";
+    hash = "sha256-gAhjFivKpUUKbk1yEElzDn8trgdyDgkCsOQEC9b5rag=";
   };
 
   nativeBuildInputs = [