Update sbt-scalajs, scalajs-library_2.13, ... to 1.20.1

Author: scala-steward

project/plugins.sbt

@@ -1,7 +1,7 @@
 addSbtPlugin("org.xerial.sbt"     %% "sbt-sonatype"             % "3.12.2")
 addSbtPlugin("com.github.sbt"     %% "sbt-pgp"                  % "2.3.1")
 addSbtPlugin("org.portable-scala"  % "sbt-scalajs-crossproject" % "1.3.2")
-addSbtPlugin("org.scala-js"        % "sbt-scalajs"              % "1.19.0")
+addSbtPlugin("org.scala-js"        % "sbt-scalajs"              % "1.20.1")
 addSbtPlugin("org.typelevel"       % "sbt-tpolecat"             % "0.5.2")
 addSbtPlugin("ch.epfl.scala"       % "sbt-scalafix"             % "0.14.3")
 addSbtPlugin("com.github.reibitto" % "sbt-welcome"              % "0.5.0")