asyncio: updates for 3.11 (#7844)

CPython changes:

- 13c10bfb77
- 9523c0d84f
- 9f04ee569c
- d03acd7270
- 195a46d6ff

Co-authored-by: Shantanu <12621235+hauntsaninja@users.noreply.github.com>
Co-authored-by: Alex Waygood <Alex.Waygood@Gmail.com>

stdlib/asyncio/streams.pyi

@@ -1,3 +1,4 @@
+import ssl
 import sys
 from _typeshed import Self, StrPath
 from collections.abc import AsyncIterator, Awaitable, Callable, Iterable, Sequence
@@ -179,6 +180,10 @@ class StreamWriter:
 
     def get_extra_info(self, name: str, default: Any = ...) -> Any: ...
     async def drain(self) -> None: ...
+    if sys.version_info >= (3, 11):
+        async def start_tls(
+            self, sslcontext: ssl.SSLContext, *, server_hostname: str | None = ..., ssl_handshake_timeout: float | None = ...
+        ) -> None: ...
 
 class StreamReader(AsyncIterator[bytes]):
     def __init__(self, limit: int = ..., loop: events.AbstractEventLoop | None = ...) -> None: ...