救命代码：
ALTER USER ‘root‘@‘localhost‘ IDENTIFIED WITH mysql_native_password BY ‘root‘;
感谢！
参考链接：https://my.oschina.net/u/3295928/blog/1811804
navicat for mysql 链接时报错：1251-Client does not support authentication protocol requested by server
原文：https://www.cnblogs.com/rtyxxy/p/12823983.html