Update sbt-version-policy to 2.0.0 (#138)

Author: scala-steward

build.sbt

@@ -11,4 +11,4 @@ addSbtPlugin("com.typesafe.sbt" % "sbt-osgi" % "0.9.6")
 addSbtPlugin("de.heikoseeberger" % "sbt-header" % "5.6.0")
 addSbtPlugin("com.dwijnand" % "sbt-travisci" % "1.2.0")   // set scalaVersion and crossScalaVersions
 addSbtPlugin("com.geirsson" % "sbt-ci-release" % "1.5.7") // set version, scmInfo, publishing settings
-addSbtPlugin("ch.epfl.scala" % "sbt-version-policy" % "1.2.1")
+addSbtPlugin("ch.epfl.scala" % "sbt-version-policy" % "2.0.0")