Update scalameta to 4.12.7

Author: scala-center-steward[bot]

build.sbt

@@ -239,7 +239,7 @@ lazy val V = new {
   val kindProjector         = "0.13.3"
   val coursierApi           = "2.1.24"
   val coursierInterface     = "1.0.27"
-  val scalameta             = "4.12.5"
+  val scalameta             = "4.12.7"
   val localSnapshotVersion  = "0.7.0-SNAPSHOT"
   // scala-steward:off
   val zio = "1.0.18"