Run pre-commit on all files

Running pre-commit on all files after replacing reorder-python-imports by isort.

testing/python/integration.py

@@ -43,9 +43,10 @@ class TestMockDecoration:
         assert values == ("x",)
 
     def test_getfuncargnames_patching(self):
-        from _pytest.compat import getfuncargnames
         from unittest.mock import patch
 
+        from _pytest.compat import getfuncargnames
+
         class T:
             def original(self, x, y, z):
                 pass