Update latest announced Scala 3 Next RC to 3.6.4-RC1 (#3458)

Author: Gedochao

project/deps.sc

@@ -12,8 +12,8 @@ object Scala {
   def scala3Next       = s"$scala3NextPrefix.3" // the newest/next version of Scala
   def scala3NextAnnounced =
     s"$scala3NextPrefix.2" // the newest/next version of Scala that's been announced
-  def scala3NextRc          = "3.6.4-RC1" // the latest RC version of Scala Next
-  def scala3NextRcAnnounced = "3.6.3-RC2" // the latest announced RC version of Scala Next
+  def scala3NextRc          = "3.6.4-RC1"  // the latest RC version of Scala Next
+  def scala3NextRcAnnounced = scala3NextRc // the latest announced RC version of Scala Next
 
   // The Scala version used to build the CLI itself.
   def defaultInternal = sys.props.get("scala.version.internal").getOrElse(scala3Lts)