Merge pull request #743 from typelevel/update/sbt-scala-native-crossproject-1.3.1

Update sbt-scala-native-crossproject to 1.3.1

Author: danicheg

project/plugins.sbt

@@ -1,6 +1,6 @@
 addSbtPlugin("org.scala-js"       % "sbt-scalajs"                   % "1.13.1")
 addSbtPlugin("org.scala-native"   % "sbt-scala-native"              % "0.4.12")
-addSbtPlugin("org.portable-scala" % "sbt-scala-native-crossproject" % "1.3.0")
+addSbtPlugin("org.portable-scala" % "sbt-scala-native-crossproject" % "1.3.1")
 addSbtPlugin("pl.project13.scala" % "sbt-jmh"                       % "0.4.4")
 val sbtTypelevelVersion = "0.4.19"
 addSbtPlugin("org.typelevel" % "sbt-typelevel"      % sbtTypelevelVersion)