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

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Author: pre-commit-ci[bot]

xarray_array_testing/reduction.py

@@ -1,8 +1,7 @@
 from contextlib import nullcontext
 
-import pytest
-
 import hypothesis.strategies as st
+import pytest
 import xarray.testing.strategies as xrst
 from hypothesis import given