Bump Scala 3 Next RC to 3.8.4-RC3

Author: Gedochao

modules/build/src/test/scala/scala/build/tests/SourceGeneratorTests.scala

@@ -6,7 +6,7 @@ import scala.Console.println
 import scala.build.Ops.EitherThrowOps
 import scala.build.options.{BuildOptions, InternalOptions}
 import scala.build.tests.util.BloopServer
-import scala.build.{Build, BuildThreads, Directories, LocalRepo, Position}
+import scala.build.{Build, BuildThreads, Directories, LocalRepo}
 
 class SourceGeneratorTests extends TestUtil.ScalaCliBuildSuite {
 

project/deps/package.mill

@@ -21,7 +21,7 @@ object Scala {
   def scala3NextPrefix = "3.8"
   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          = "3.8.4-RC2" // the latest RC version of Scala Next
+  def scala3NextRc          = "3.8.4-RC3" // the latest RC version of Scala Next
   def scala3NextRcAnnounced = "3.8.4-RC2" // the latest announced RC version of Scala Next
 
   // The Scala version used to build the CLI itself.