add type Any to connection_kwargs

Author: dvora-h

redis/asyncio/cluster.py

@@ -749,7 +749,7 @@ def __init__(
         max_connections: int = 2 ** 31,
         connection_class: Type[Connection] = Connection,
         response_callbacks: Dict = RedisCluster.RESPONSE_CALLBACKS,
-        **connection_kwargs,
+        **connection_kwargs: Any,
     ) -> None:
         if host == "localhost":
             host = socket.gethostbyname(host)