community/uvicorn: upgrade to 0.32.1, skip failed websockets tests

https://github.com/encode/uvicorn/compare/0.32.0...0.32.1

Upstream still uses websocket.legacy and features deprecated in p3-websockets >=14.0. Ignore the deprecation notices and allow 2 tests to xfail until upstream updates to a newer version. Error found during a rebuild on the 3.21 builders (error log).

Example of the error:

    async def test_send_binary_data_to_server_bigger_than_default_on_websockets(
        http_protocol_cls: HTTPProtocol,                                        
        client_size_sent: int,                                                  
        server_size_max: int,
        expected_result: int,
        unused_tcp_port: int,
    ):

	[...]
		
		async with run_server(config):
            async with websockets.client.connect(f"ws://127.0.0.1:{unused_tcp_port}", max_size=client_size_sent) as ws:
                await ws.send(b"\x01" * client_size_sent)
                if expected_result == 0:
                    data = await ws.recv()
                    assert data == b"\x01" * client_size_sent
                else:
>                   with pytest.raises(websockets.exceptions.ConnectionClosedError):
E                   Failed: DID NOT RAISE <class 'websockets.exceptions.ConnectionClosedError'>

tests/protocols/test_websocket.py:744: Failed

Failed tests:

test_send_binary_data_to_server_bigger_than_default_on_websockets[httptools-max=defaults sent=defaults+1]
test_send_binary_data_to_server_bigger_than_default_on_websockets[h11-max=defaults sent=defaults+1]

--

@mpolanski Would like to check whether this might work for you, to unblock the builders.