Update scala-library to 2.13.16

Co-authored-by: scala-text-bot[bot] <74845010+scala-text-bot[bot]@users.noreply.github.com>

Author: scala-text-bot[bot]

build.sbt

@@ -1,5 +1,5 @@
 name := "scala-sandbox"
 
-scalaVersion := "2.13.15"
+scalaVersion := "2.13.16"
 
 scalacOptions ++= Seq("-deprecation", "-feature", "-unchecked", "-Xlint")