asyncio: `DatagramProtocol.datagram_received` has incorrect annotation for `addr` parameter

`DatagramProtocol.datagram_received` is annotated as:

```python
def datagram_received(self, data: bytes, addr: tuple[str | Any, int]) -> None: ...
```

However, [when using IPv6](https://docs.python.org/3/library/socket.html#socket-families), the type of `addr` will be `tuple[str, int, int, int]` (`(host, port, flowinfo, scope_id)`).