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

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

Author: pre-commit-ci[bot]

ipykernel/_version.py

@@ -1,6 +1,7 @@
 """
 store the current version info of the server.
 """
+
 from __future__ import annotations
 
 import re

ipykernel/ipkernel.py

@@ -752,9 +752,9 @@ def run_closure(self: threading.Thread):
             for stream in [stdout, stderr]:
                 if isinstance(stream, OutStream):
                     if parent == kernel_thread_ident:
-                        stream._thread_to_parent_header[
-                            self.ident
-                        ] = kernel._new_threads_parent_header
+                        stream._thread_to_parent_header[self.ident] = (
+                            kernel._new_threads_parent_header
+                        )
                     else:
                         stream._thread_to_parent[self.ident] = parent
             _threading_Thread_run(self)