Update dependency org.scala-js:sbt-scalajs to v1.9.0

Author: renovate-bot

project/plugins.sbt

@@ -1,7 +1,7 @@
 addSbtPlugin("org.scalameta"      % "sbt-scalafmt"                  % "2.4.5")
 addSbtPlugin("ch.epfl.scala"      % "sbt-scalafix"                  % "0.9.33")
 addSbtPlugin("com.github.cb372"   % "sbt-explicit-dependencies"     % "0.2.10")
-addSbtPlugin("org.scala-js"       % "sbt-scalajs"                   % "1.8.0")
+addSbtPlugin("org.scala-js"       % "sbt-scalajs"                   % "1.9.0")
 addSbtPlugin("org.portable-scala" % "sbt-scalajs-crossproject"      % "1.1.0")
 addSbtPlugin("com.eed3si9n"       % "sbt-buildinfo"                 % "0.9.0")
 addSbtPlugin("com.geirsson"       % "sbt-ci-release"                % "1.5.7")