Spot websocket connection doesn't get closed properly

[btschwertfeger]

Since websockets==14.0, they changed the backend to a "new" asyncio implementation, changing the default value of max_queue from None to 16. This causes troubles in high-traffic connections, as they can't be properly closed and remain stuck.

In order to avoid this, max_queue can be set back to None temporarily, as the documentation of websockets states that this is not recommended.

Since the cancellation error seems to be some kind of buffer overflow or other kind of trouble, I already created an issue at python-websockets/websockets#1555, which hopefully get addressed soon.