Update sbt-scalajs, scalajs-compiler, ... to 1.20.2 (#550)

Author: scala-steward

project/plugins.sbt

@@ -3,7 +3,7 @@ resolvers += "OSS Snapshots" at "https://oss.sonatype.org/content/repositories/s
 addSbtPlugin("org.scalameta"      % "sbt-scalafmt"             % "2.5.5")
 addSbtPlugin("org.typelevel"      % "sbt-tpolecat"             % "0.5.2")
 addSbtPlugin("com.eed3si9n"       % "sbt-assembly"             % "2.3.1")
-addSbtPlugin("org.scala-js"       % "sbt-scalajs"              % "1.20.1")
+addSbtPlugin("org.scala-js"       % "sbt-scalajs"              % "1.20.2")
 addSbtPlugin("org.portable-scala" % "sbt-scalajs-crossproject" % "1.3.2")
 addSbtPlugin("io.shiftleft"       % "sbt-ci-release-early"     % "2.1.11")
 addSbtPlugin("com.47deg"          % "sbt-microsites"           % "1.4.4")