Update scala3NextVersion to 3.9.0-RC2

Author: He-Pin

project/Dependencies.scala

@@ -44,7 +44,7 @@ object Dependencies {
 
   val scala213Version = "2.13.18"
   val scala3Version = "3.3.8"
-  val scala3NextVersion = "3.9.0-RC1"
+  val scala3NextVersion = "3.9.0-RC2"
   val publishedScalaVersions = Seq(scala213Version, scala3Version)
 
   val reactiveStreamsVersion = "1.0.4"