update gitbucket to 4.30.0

Author: yaroot

build.sbt

@@ -2,7 +2,7 @@ organization := "gitbucket"
 name := "gitbucket-pages-plugin"
 scalaVersion := "2.12.7"
 version := "1.7.1"
-gitbucketVersion := "4.29.0"
+gitbucketVersion := "4.30.0"
 scalacOptions := Seq("-unchecked", "-deprecation", "-encoding", "utf8", "-feature")
 
 scalafmtOnCompile := true