Update nscplugin, sbt-scala-native to 0.5.6

Author: typelevel-steward[bot]

project/plugins.sbt

@@ -2,7 +2,7 @@ val sbtTypelevelVersion = "0.7.4"
 addSbtPlugin("org.typelevel" % "sbt-typelevel" % sbtTypelevelVersion)
 addSbtPlugin("org.typelevel" % "sbt-typelevel-site" % sbtTypelevelVersion)
 addSbtPlugin("org.scala-js" % "sbt-scalajs" % "1.16.0")
-addSbtPlugin("org.scala-native" % "sbt-scala-native" % "0.4.17")
+addSbtPlugin("org.scala-native" % "sbt-scala-native" % "0.5.6")
 addSbtPlugin("com.armanbilge" % "sbt-scala-native-config-brew-github-actions" % "0.3.0")
 addSbtPlugin("io.github.sbt-doctest" % "sbt-doctest" % "0.11.0")
 addSbtPlugin("pl.project13.scala" % "sbt-jmh" % "0.4.7")