Update sbt-scalajs, scalajs-compiler, ... to 1.20.1

Author: scala-steward

project/plugins.sbt

@@ -4,6 +4,6 @@ addSbtPlugin("ch.epfl.scala"      % "sbt-scalafix"             % "0.9.34")
 addSbtPlugin("com.github.sbt"     % "sbt-ci-release"           % "1.5.10")
 addSbtPlugin("com.typesafe.sbt"   % "sbt-git"                  % "1.0.2")
 addSbtPlugin("org.portable-scala" % "sbt-scalajs-crossproject" % "1.3.2")
-addSbtPlugin("org.scala-js"       % "sbt-scalajs"              % "1.11.0")
+addSbtPlugin("org.scala-js"       % "sbt-scalajs"              % "1.20.1")
 addSbtPlugin("org.scalameta"      % "sbt-mdoc"                 % "2.3.6")
 addSbtPlugin("pl.project13.scala" % "sbt-jmh"                  % "0.4.5")