Fix python linter errors

pkgs/clan-cli/clan_cli/tests/test_machines_cli.py

@@ -144,7 +144,7 @@ def test_machine_delete(
 ) -> None:
     flake = flake_with_sops
 
-    admin_key, machine_key, machine2_key, *xs = sops_setup.keys
+    admin_key, machine_key, machine2_key, *_xs = sops_setup.keys
 
     # create a couple machines with their keys
     for name, key in (("my-machine", machine_key), ("my-machine2", machine2_key)):

pkgs/clan-cli/clan_cli/tests/test_vars.py

@@ -1418,7 +1418,7 @@ def test_shared_generator_conflicting_definition_raises_error(
     # because they have conflicting definitions for the same shared generator
     with pytest.raises(
         ClanError,
-        match=".*differ.*",
+        match=r".*differ.*",
     ):
         cli.run(["vars", "generate", "--flake", str(flake.path)])