Merge pull request #12 from scala-steward-bot/update/gitbucket-4.38.1

Update gitbucket to 4.38.1

Author: takezoe

build.sbt

@@ -2,4 +2,4 @@ name := "gitbucket-helloworld-plugin"
 organization := "io.github.gitbucket"
 version := "1.0.0"
 scalaVersion := "2.13.8"
-gitbucketVersion := "4.37.2"
+gitbucketVersion := "4.38.1"