fix linter error

src/dailyai/serializers/protobuf_serializer.py

@@ -17,14 +17,15 @@ class ProtobufFrameSerializer(FrameSerializer):
     def __init__(self):
         pass
 
-    def serialize(self, frame: TextFrame | AudioFrame | TranscriptionQueueFrame) -> bytes:
+    def serialize(self, frame: Frame) -> bytes:
         proto_frame = frame_protos.Frame()
         if type(frame) not in self.SERIALIZABLE_TYPES:
             raise ValueError(
                 f"Frame type {type(frame)} is not serializable. You may need to add it to ProtobufFrameSerializer.SERIALIZABLE_FIELDS.")
 
+        # type: ignore (unnecessary warnings, we check type above)
         proto_optional_name = self.SERIALIZABLE_TYPES[type(frame)]
-        for field in dataclasses.fields(frame):
+        for field in dataclasses.fields(frame):  # type: ignore
             setattr(getattr(proto_frame, proto_optional_name), field.name,
                     getattr(frame, field.name))