Update mypy

Author: Cito

poetry.lock

@@ -54,7 +54,7 @@ black = [
     {version = "21.7b0", python = ">=3.6.2"}
 ]
 flake8 = "^3.9"
-mypy = "0.812"
+mypy = "0.910"
 codecov = "^2"
 sphinx = "^3.5"
 sphinx_rtd_theme = ">=0.5,<1"

pyproject.toml

@@ -1,4 +1,4 @@
-from asyncio import CancelledError, Event, Future, ensure_future, wait
+from asyncio import CancelledError, Event, Task, ensure_future, wait
 from concurrent.futures import FIRST_COMPLETED
 from inspect import isasyncgen, isawaitable
 from typing import cast, Any, AsyncIterable, Callable, Optional, Set, Type, Union
@@ -46,7 +46,7 @@ async def __anext__(self) -> Any:
             anext = ensure_future(self.iterator.__anext__())
 
             try:
-                pending: Set[Future] = (
+                pending: Set[Task] = (
                     await wait([aclose, anext], return_when=FIRST_COMPLETED)
                 )[1]
             except CancelledError:

src/graphql/subscription/map_async_iterator.py

@@ -17,7 +17,7 @@ commands =
 [testenv:mypy]
 basepython = python3.9
 deps =
-    mypy==0.812
+    mypy==0.910
     pytest>=6.2,<7
 commands =
     mypy src tests