Merge pull request #3277 from typelevel/update/series/3.x/nscplugin-0.4.9

Update nscplugin, sbt-scala-native, ... to 0.4.9 in series/3.x

Author: djspiewak

project/plugins.sbt

@@ -4,7 +4,7 @@ addSbtPlugin("org.typelevel" % "sbt-typelevel" % "0.5.0-M6")
 
 addSbtPlugin("org.scala-js" % "sbt-scalajs" % "1.11.0")
 addSbtPlugin("org.portable-scala" % "sbt-scalajs-crossproject" % "1.2.0")
-addSbtPlugin("org.scala-native" % "sbt-scala-native" % "0.4.7")
+addSbtPlugin("org.scala-native" % "sbt-scala-native" % "0.4.9")
 addSbtPlugin("org.portable-scala" % "sbt-scala-native-crossproject" % "1.2.0")
 addSbtPlugin("pl.project13.scala" % "sbt-jmh" % "0.4.3")
 addSbtPlugin("org.scalameta" % "sbt-scalafmt" % "2.4.6")