Ubuntu18.04+ROS + opencv4 修改cv_bridge配置文件，解决ROS使用不同版本opencv的冲突问题

参考：
https://blog.csdn.net/qq_38429958/article/details/123185284

https://blog.csdn.net/PrideQ/article/details/115304494

https://blog.csdn.net/weixin_42118657/article/details/117123349