Update json4s to 3.6.8
Update json4s to 3.6.8
takezoe/gitbucket,imeszaros/gitbucket,gitbucket/gitbucket,xuwei-k/gitbucket,gitbucket/gitbucket,gitbucket/gitbucket,takezoe/gitbucket,imeszaros/gitbucket,xuwei-k/gitbucket,xuwei-k/gitbucket,takezoe/gitbucket,imeszaros/gitbucket,gitbucket/gitbucket,xuwei-k/gitbucket,imeszaros/gitbucket,takezoe/gitbucket