Merge pull request #332 from scala-steward/update/sbt-scalajs-crossproject-0.6.1

Update sbt-scalajs-crossproject to 0.6.1

Author: ashawley

project/plugins.sbt

@@ -4,6 +4,6 @@ val scalaJSVersion =
   Option(System.getenv("SCALAJS_VERSION")).filter(_.nonEmpty).getOrElse("0.6.28")
 
 addSbtPlugin("org.scala-js" % "sbt-scalajs" % scalaJSVersion)
-addSbtPlugin("org.portable-scala" % "sbt-scalajs-crossproject" % "0.6.0")
+addSbtPlugin("org.portable-scala" % "sbt-scalajs-crossproject" % "0.6.1")
 addSbtPlugin("org.scala-lang.modules" % "sbt-scala-module" % "2.0.0")
 addSbtPlugin("ch.epfl.lamp" % "sbt-dotty" % "0.3.3")