Update scala3-library_sjs1_3 to 3.8.4

Author: typelevel-steward[bot]

build.sbt

@@ -1,7 +1,7 @@
 import com.typesafe.tools.mima.core._
 
 val Scala213 = "2.13.18"
-val Scala3 = "3.3.8"
+val Scala3 = "3.8.4"
 
 ThisBuild / tlBaseVersion := "0.4"
 ThisBuild / crossScalaVersions := Seq("2.12.21", Scala213, Scala3)