Drop typing import from test_logging_conf.py

#36

Type annotations were updated for Python 3.10 in #36.
This `from typing import Set` was added in #49 prior to merging #36,
and was overlooked when merging the PR.

This commit will replace `typing.Set` with a parametrized generic.
https://peps.python.org/pep-0585/
https://docs.python.org/3/whatsnew/3.9.html

tests/test_logging_conf.py

@@ -1,6 +1,7 @@
+from __future__ import annotations
+
 import os
 from pathlib import Path
-from typing import Set
 
 import pytest
 from pytest_mock import MockerFixture
@@ -194,7 +195,7 @@ def test_logging_filters(
         self,
         capfd: pytest.CaptureFixture,
         log_filters_input: str,
-        log_filters_output: Set[str],
+        log_filters_output: set[str],
         mocker: MockerFixture,
         monkeypatch: pytest.MonkeyPatch,
     ) -> None: