pkgs/generate-test-vars: Fix erroneous module import

The machines module lives in the `clan_lib` library.

pkgs/generate-test-vars/generate_test_vars/cli.py

@@ -10,10 +10,10 @@ from pathlib import Path
 from tempfile import NamedTemporaryFile
 from typing import Any, override
 
-from clan_cli.machines.machines import Machine
 from clan_cli.vars.generate import generate_vars
 from clan_lib.dirs import find_git_repo_root
 from clan_lib.flake.flake import Flake
+from clan_lib.machines.machines import Machine
 from clan_lib.nix import nix_config, nix_eval
 
 sops_priv_key = (