[2.9.x] sbt-plugin 2.9.9 (was 2.9.8)

Author: scala-steward

project/plugins.sbt

@@ -2,4 +2,4 @@ scalacOptions ++= Seq(
   "-feature", "-unchecked", "-deprecation",
   "-Xlint:-unused", "-Xfatal-warnings")
 
-addSbtPlugin("com.typesafe.play" % "sbt-plugin" % "2.9.8")
+addSbtPlugin("com.typesafe.play" % "sbt-plugin" % "2.9.9")