Merge pull request #358 from http4s/update/series/0.24/scala-library-2.13.16

Update scala-library to 2.13.16 in series/0.24

Author: rossabaker

build.sbt

@@ -10,7 +10,7 @@ ThisBuild / developers := List(
 // publish website from this branch
 ThisBuild / tlSitePublishBranch := Some("main")
 
-val Scala213 = "2.13.15"
+val Scala213 = "2.13.16"
 ThisBuild / crossScalaVersions := Seq("2.12.20", Scala213, "3.3.4")
 ThisBuild / scalaVersion := Scala213 // the default Scala