Fix type of frame for add_on_cancel_callback

pika-stubs/channel.pyi

@@ -23,6 +23,7 @@ _OnBasicGetCallback = Callable[[Channel, spec.Basic.GetOk, spec.BasicProperties,
 _OnBasicRecoverCallback = Callable[[frame.Method[spec.Basic.RecoverOk]], None]
 _OnBasicQosCallback = Callable[[frame.Method[spec.Basic.QosOk]], None]
 _OnBasicCancelCallback = Callable[[frame.Method[spec.Basic.CancelOk]], None]
+_OnCancelCallback = Callable[[spec.Basic.Cancel], None]
 _OnCloseCallback = Callable[[Channel, Exception], None]
 _OnExchangeBindCallback = Callable[[frame.Method[spec.Exchange.BindOk]], None]
 _OnExchangeDeclareCallback = Callable[[frame.Method[spec.Exchange.DeclareOk]], None]
@@ -54,7 +55,7 @@ class Channel:
     def __init__(self, connection: connection_.Connection, channel_number: int, on_open_callback: _OnOpenCallback) -> None: ...
     def __int__(self) -> int: ...
     def add_callback(self, callback: Callable[..., Any], replies: Sequence[Any], one_shot: bool = ...) -> None: ...
-    def add_on_cancel_callback(self, callback: _OnBasicCancelCallback) -> None: ...
+    def add_on_cancel_callback(self, callback: _OnCancelCallback) -> None: ...
     def add_on_close_callback(self, callback: _OnCloseCallback) -> None: ...
     def add_on_flow_callback(self, callback: _OnFlowCallback) -> None: ...
     def add_on_return_callback(self, callback: _OnReturnCallback) -> None: ...