Merge pull request #512 from typelevel/update/nscplugin-0.4.7

Update nscplugin, sbt-scala-native, ... to 0.4.7

Author: mergify[bot]

project/plugins.sbt

@@ -1,5 +1,5 @@
 addSbtPlugin("org.scala-js" % "sbt-scalajs" % "1.10.1")
-addSbtPlugin("org.scala-native" % "sbt-scala-native" % "0.4.5")
+addSbtPlugin("org.scala-native" % "sbt-scala-native" % "0.4.7")
 addSbtPlugin("org.portable-scala" % "sbt-scalajs-crossproject" % "1.2.0")
 addSbtPlugin("org.portable-scala" % "sbt-scala-native-crossproject" % "1.2.0")
 addSbtPlugin("com.thoughtworks.sbt-api-mappings" % "sbt-api-mappings" % "3.0.2")