chore(package): update fluent-ffmpeg to version 2.1.1 (#433)
chore(package): update fluent-ffmpeg to version 2.1.1 (#433)

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mukaiu/wechaty,binsee/wechaty,mukaiu/wechaty,binsee/wechaty,zixia/wechaty,binsee/wechaty,Chatie/wechaty,wechaty/wechaty,Chatie/wechaty,lijiarui/wechaty,Chatie/wechaty,lijiarui/wechaty,wechaty/wechaty,wechaty/wechaty,mukaiu/wechaty,zixia/wechaty