Upgrade black version (#7089)

stdlib/asyncio/events.pyi

@@ -32,6 +32,7 @@ class Handle:
         ) -> None: ...
     else:
         def __init__(self, callback: Callable[..., Any], args: Sequence[Any], loop: AbstractEventLoop) -> None: ...
+
     def cancel(self) -> None: ...
     def _run(self) -> None: ...
     if sys.version_info >= (3, 7):
@@ -49,6 +50,7 @@ class TimerHandle(Handle):
         ) -> None: ...
     else:
         def __init__(self, when: float, callback: Callable[..., Any], args: Sequence[Any], loop: AbstractEventLoop) -> None: ...
+
     def __hash__(self) -> int: ...
     if sys.version_info >= (3, 7):
         def when(self) -> float: ...
@@ -62,6 +64,7 @@ class AbstractServer:
         def is_serving(self) -> bool: ...
         async def start_serving(self) -> None: ...
         async def serve_forever(self) -> None: ...
+
     async def wait_closed(self) -> None: ...
 
 class AbstractEventLoop(metaclass=ABCMeta):
@@ -104,6 +107,7 @@ class AbstractEventLoop(metaclass=ABCMeta):
     else:
         @abstractmethod
         def create_task(self, coro: Awaitable[_T] | Generator[Any, None, _T]) -> Task[_T]: ...
+
     @abstractmethod
     def set_task_factory(self, factory: Callable[[AbstractEventLoop, Generator[Any, None, _T]], Future[_T]] | None) -> None: ...
     @abstractmethod
@@ -357,6 +361,7 @@ class AbstractEventLoop(metaclass=ABCMeta):
             backlog: int = ...,
             ssl: _SSLContext = ...,
         ) -> Server: ...
+
     @abstractmethod
     async def create_datagram_endpoint(
         self,