[pre-commit.ci] auto fixes from pre-commit.com hooks

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Author: pre-commit-ci[bot]

xarray/tests/test_groupby.py

@@ -1,12 +1,12 @@
 from __future__ import annotations
-from typing_extensions import assert_type
 
 import warnings
 
 import numpy as np
 import pandas as pd
 import pytest
 from pandas.tseries.frequencies import to_offset
+from typing_extensions import assert_type
 
 import xarray as xr
 from xarray import DataArray, Dataset, Variable