set scala.js DOM api version to 2.8.1

Author: jbytecode

build.sbt

@@ -12,7 +12,7 @@ lazy val root = project
 
     libraryDependencies ++= Seq(
       "org.scalameta" %%% "munit" % "1.1.1" % Test,
-      "org.scala-js" %%% "scalajs-dom" % "2.8.0")
+      "org.scala-js" %%% "scalajs-dom" % "2.8.1")
   )