Update sbt-scalajs, scalajs-library_2.13, ... to 1.20.2

Author: scala-steward

project/plugins.sbt

@@ -1,6 +1,6 @@
 ThisBuild / libraryDependencySchemes += "org.scala-lang.modules" %% "scala-xml" % VersionScheme.Always
 // JavaScript
-addSbtPlugin("org.scala-js" % "sbt-scalajs" % "1.16.0")
+addSbtPlugin("org.scala-js" % "sbt-scalajs" % "1.20.2")
 addSbtPlugin("ch.epfl.scala" % "sbt-scalajs-bundler" % "0.21.1")
 addSbtPlugin("org.scalablytyped.converter" % "sbt-converter" % "1.0.0-beta44")
 addSbtPlugin("com.disneystreaming.smithy4s" % "smithy4s-sbt-codegen" % "0.18.16")