style: pre-commit fixes

Author: pre-commit-ci[bot]

tests/integration/test_classification.py

@@ -238,4 +238,4 @@ def test_insensitive_classify_using_hessian(self, model, parameter_values):
         assert message == (
             "Classification cannot proceed due to infinite cost value(s)."
             " The result is near the upper bound of R0_a [Ohm]."
-        )
+        )