Merge pull request #264 from scala-steward/update/auxlib-0.5.6

Update auxlib, clib, javalib, junit-plugin, ... to 0.5.6

Author: Philippus

project/plugins.sbt

@@ -2,4 +2,4 @@ addSbtPlugin("org.scala-lang.modules" % "sbt-scala-module" % "3.2.0")
 addSbtPlugin("org.portable-scala" % "sbt-scalajs-crossproject" % "1.3.2")
 addSbtPlugin("org.portable-scala" % "sbt-scala-native-crossproject" % "1.3.2")
 addSbtPlugin("org.scala-js" % "sbt-scalajs" % "1.17.0")
-addSbtPlugin("org.scala-native" % "sbt-scala-native" % "0.5.5")
+addSbtPlugin("org.scala-native" % "sbt-scala-native" % "0.5.6")