Update Scala versions.

Author: arashi01

Diff for: build.sbt

@@ -4,8 +4,8 @@ val newScalaBinaryVersionsInThisRelease: Set[String] = Set()
 inThisBuild(Def.settings(
   version := "1.1.2-SNAPSHOT",
   organization := "org.scala-js",
-  scalaVersion := "2.12.11",
-  crossScalaVersions := Seq("2.11.12", "2.12.11", "2.13.2"),
+  scalaVersion := crossScalaVersions.value.last,
+  crossScalaVersions := Seq("2.11.12", "2.12.18", "2.13.11", "3.3.0"),
   scalacOptions ++= Seq(
     "-deprecation",
     "-feature",