Fix pre-commit errors.

Author: OlehKSS

pandas/core/arrays/categorical.py

@@ -17,7 +17,11 @@
     Union,
     cast,
 )
-from warnings import catch_warnings, simplefilter, warn
+from warnings import (
+    catch_warnings,
+    simplefilter,
+    warn,
+)
 
 import numpy as np