Color point cloud type maybe has wrong

[yuetin]

OrbbecSDK_ROS1/src/ob_camera_node.cpp

Lines 557 to 558 in 2385c91

	cloud_msg_.point_step = addPointField(cloud_msg_, format_str, 1, sensor_msgs::PointField::FLOAT32,
	static_cast<int>(cloud_msg_.point_step));

I think here should be UINT32
cloud_msg_.point_step = addPointField(cloud_msg_, format_str, 1, sensor_msgs::PointField::UINT32, static_cast<int>(cloud_msg_.point_step));