use node v13 for all testing
use node v13 for all testing

wechaty/wechaty,binsee/wechaty,mukaiu/wechaty,mukaiu/wechaty,mukaiu/wechaty,binsee/wechaty,zixia/wechaty,wechaty/wechaty,binsee/wechaty,zixia/wechaty,wechaty/wechaty