Update scala3-library_sjs1_3 to 3.8.4

Author: typelevel-steward[bot]

build.sbt

@@ -16,7 +16,7 @@ ThisBuild / githubWorkflowJavaVersions := Seq(PrimaryJava, LTSJava, GraalVM)
 
 val Scala212 = "2.12.21"
 val Scala213 = "2.13.18"
-val Scala3 = "3.3.8"
+val Scala3 = "3.8.4"
 
 ThisBuild / crossScalaVersions := Seq(Scala212, Scala213, Scala3)
 ThisBuild / scalaVersion := Scala213