Update auxlib, clib, javalib, nativelib, ... to 0.5.6

Author: scala-steward-bot

project/plugins.sbt

@@ -14,7 +14,7 @@ addSbtPlugin("com.github.sbt" % "sbt-pgp" % "2.3.0")
 
 addSbtPlugin("org.scalameta" % "sbt-scalafmt" % "2.5.2")
 
-addSbtPlugin("org.scala-native" % "sbt-scala-native" % "0.5.5")
+addSbtPlugin("org.scala-native" % "sbt-scala-native" % "0.5.6")
 
 addSbtPlugin("org.portable-scala" % "sbt-scala-native-crossproject" % "1.3.2")