Update scala-library to 2.13.16 (scalapb#293)

Co-authored-by: mergify[bot] <37929162+mergify[bot]@users.noreply.github.com>

Author: scala-steward

build.sbt

@@ -1,7 +1,7 @@
 val scalapbVersion = "0.11.17"
 
 val Scala212 = "2.12.20"
-val Scala213 = "2.13.15"
+val Scala213 = "2.13.16"
 val Scala3 = "3.6.3"
 
 ThisBuild / crossScalaVersions := Seq(Scala212, Scala213, Scala3)

example/build.sbt

@@ -3,7 +3,7 @@ import sbtcrossproject.CrossPlugin.autoImport.{CrossType, crossProject}
 
 name := "scalapb-grpcweb-example"
 
-ThisBuild / scalaVersion := "2.13.15"
+ThisBuild / scalaVersion := "2.13.16"
 
 ThisBuild / resolvers ++= Seq(
   Resolver.sonatypeRepo("snapshots"),