Update sbt-scalajs, ... to 1.13.0

Author: scala-steward

Diff for: project/plugins.sbt

@@ -1,7 +1,7 @@
 addSbtPlugin("org.scala-lang.modules" % "sbt-scala-module" % "3.0.1")
 
 addSbtPlugin("org.portable-scala" % "sbt-scalajs-crossproject" % "1.2.0")
-addSbtPlugin("org.scala-js" % "sbt-scalajs" % "1.12.0")
+addSbtPlugin("org.scala-js" % "sbt-scalajs" % "1.13.0")
 
 addSbtPlugin("org.portable-scala" % "sbt-scala-native-crossproject" % "1.2.0")
 addSbtPlugin("org.scala-native" % "sbt-scala-native" % "0.4.9")