Unpacks the data from a gzipped object and processes it:

            gzip_packed#3072cfa1 packed_data:bytes = Object;

async def _handle_gzip_packed(self, message):
        """
        Unpacks the data from a gzipped object and processes it:

            gzip_packed#3072cfa1 packed_data:bytes = Object;
        """
        self._log.debug('Handling gzipped data')
        with BinaryReader(message.obj.data) as reader:
            message.obj = reader.tgread_object()
            await self._process_message(message)