Fix a test causing py38-lsof job failure

testing/test_config.py

@@ -40,11 +40,11 @@ class TestParseIni:
         tmp_path: Path,
         section: str,
         filename: str,
-        monkeypatch: MonkeyPatch,
     ) -> None:
         sub = tmp_path / "sub"
         sub.mkdir()
-        monkeypatch.chdir(sub)
+        with MonkeyPatch.context() as mp:
+            mp.chdir(sub)
             (tmp_path / filename).write_text(
                 textwrap.dedent(
                     """\