✏️ add typing

nonebot/typing.py

@@ -17,7 +17,6 @@
 .. _typing:
     https://docs.python.org/3/library/typing.html
 """
-from asyncio import Task
 from typing import (
     TYPE_CHECKING,
     Any,
@@ -32,6 +31,8 @@ from typing import (
 )
 
 if TYPE_CHECKING:
+    from asyncio import Task
+
     from nonebot.adapters import Bot, Event
     from nonebot.permission import Permission
 
@@ -249,7 +250,7 @@ T_PermissionUpdater = Callable[..., Union["Permission", Awaitable["Permission"]]
 
   PermissionUpdater 在 Matcher.pause, Matcher.reject 时被运行，用于更新会话对象权限。默认会更新为当前事件的触发对象。
 """
-T_DependencyCache = Dict[Callable[..., Any], Task[Any]]
+T_DependencyCache = Dict[Callable[..., Any], "Task[Any]"]
 """
 :类型: ``Dict[Callable[..., Any], Task[Any]]``
 :说明: