Merge pull request #169 from typelevel/update/sbt-scalajs-1.21.0

Update sbt-scalajs, scalajs-compiler, ... to 1.21.0

Author: mergify[bot]

project/plugins.sbt

@@ -3,6 +3,6 @@ addSbtPlugin("org.typelevel" % "sbt-typelevel-mergify" % "0.8.5")
 addSbtPlugin("com.lightbend.paradox" % "sbt-paradox" % "0.10.7")
 addSbtPlugin("com.github.sbt" % "sbt-site-paradox" % "1.7.0")
 addSbtPlugin("com.github.sbt" % "sbt-ghpages" % "0.9.0")
-addSbtPlugin("org.scala-js" % "sbt-scalajs" % "1.20.2")
+addSbtPlugin("org.scala-js" % "sbt-scalajs" % "1.21.0")
 addSbtPlugin("org.scala-native" % "sbt-scala-native" % "0.4.17")
 addSbtPlugin("org.scalameta" % "sbt-mdoc" % "2.8.2")