Merge pull request scala#12464 from dotty-staging/scala3-release-3.0.0

Upgrade Dotty Reference to 3.0.0

project/Build.scala

@@ -63,7 +63,7 @@ object DottyJSPlugin extends AutoPlugin {
 }
 
 object Build {
-  val referenceVersion = "3.0.0-RC3"
+  val referenceVersion = "3.0.0"
 
   val baseVersion = "3.0.1-RC1"
 
@@ -81,8 +81,7 @@ object Build {
    *  set to 3.1.3. If it is going to be 3.1.0, it must be set to the latest
    *  3.0.x release.
    */
-  val previousDottyVersion = "3.0.0-RC3"
-  val previousDottyBinaryVersion = "3.0.0-RC3"
+  val previousDottyVersion = "3.0.0"
 
   object CompatMode {
     final val BinaryCompatible = 0
@@ -427,7 +426,7 @@ object Build {
       val thisProjectID = projectID.value
       val crossedName = thisProjectID.crossVersion match {
         case cv: Disabled => thisProjectID.name
-        case cv: Binary => s"${thisProjectID.name}_${cv.prefix}$previousDottyBinaryVersion${cv.suffix}"
+        case cv: Binary => s"${thisProjectID.name}_${cv.prefix}3${cv.suffix}"
       }
       (thisProjectID.organization % crossedName % previousDottyVersion)
     },