Fix websocket provider import in tests

Author: krassowski

tests/test_pycrdt_yjs.py

@@ -7,8 +7,7 @@
 import pytest
 from anyio import Event, create_task_group, move_on_after
 from httpx_ws import aconnect_ws
-from pycrdt import Doc, Map
-from pycrdt.websocket import WebsocketProvider
+from pycrdt import Doc, Map, Provider
 from utils import Websocket
 
 from jupyter_ydoc import YNotebook
@@ -66,7 +65,7 @@ async def test_ypy_yjs_0(yws_server, yjs_client):
     ydoc = Doc()
     ynotebook = YNotebook(ydoc)
     room_name = "my-roomname"
-    async with aconnect_ws(f"http://localhost:{port}/{room_name}") as websocket, WebsocketProvider(
+    async with aconnect_ws(f"http://localhost:{port}/{room_name}") as websocket, Provider(
         ydoc, Websocket(websocket, room_name)
     ):
         nb = stringify_source(json.loads((files_dir / "nb0.ipynb").read_text()))