core: cleanup/sort imports according to ruff check --select I

my/core/tests/auto_stats.py

@@ -6,7 +6,7 @@ from contextlib import contextmanager
 from dataclasses import dataclass
 from datetime import datetime, timedelta
 from pathlib import Path
-from typing import Iterable, Sequence, Iterator
+from typing import Iterable, Iterator, Sequence
 
 
 @dataclass