Bump to Scala 2.13.16

Author: adpi2

build.sbt

@@ -229,7 +229,7 @@ addCommandAlias("compileScalafixOutputinScala3", s"""set `scalafix-output`/scala
 def isCI = System.getenv("CI") != null
 
 lazy val V = new {
-  val scala213              = "2.13.15"
+  val scala213              = "2.13.16"
   val scala213BinaryVersion = "2.13"
   val scala212              = "2.12.20"
   val scalatest             = "3.2.19"