Upgrade black to 20.8b1 (#39287)

homeassistant/core.py

@@ -319,9 +319,7 @@ class HomeAssistant:
         elif is_callback(check_target):
             self.loop.call_soon(target, *args)
         else:
-            task = self.loop.run_in_executor(  # type: ignore
-                None, target, *args
-            )
+            task = self.loop.run_in_executor(None, target, *args)  # type: ignore
 
         # If a task is scheduled
         if self._track_task and task is not None: