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

for more information, see https://pre-commit.ci

Author: pre-commit-ci[bot]

tests/test_subshells.py

@@ -218,9 +218,7 @@ def test_run_concurrently_timing(include_main_shell):
         assert duration < timedelta(seconds=sum(times))
 
 
-@pytest.mark.xfail(
-    strict=False, reason="subshell still sometime give different results"
-)
+@pytest.mark.xfail(strict=False, reason="subshell still sometime give different results")
 def test_execution_count():
     with new_kernel() as kc:
         subshell_id = create_subshell_helper(kc)["subshell_id"]