Merge pull request #1950 from scalacenter/update/scalameta-4.9.1

Update scalameta to 4.9.1

Author: bjaglin

project/Dependencies.scala

@@ -20,7 +20,7 @@ object Dependencies {
   val metaconfigV = "0.12.0"
   val nailgunV = "0.9.1"
   val scalaXmlV = "2.2.0"
-  val scalametaV = "4.9.1-RC1"
+  val scalametaV = "4.9.1"
   val scalatestV = "3.2.18"
   val munitV = "0.7.29"