Update scala-library to 2.13.18 in series/0.24

Author: http4s-steward[bot]

build.sbt

@@ -5,7 +5,7 @@ ThisBuild / developers := List(
 ThisBuild / startYear := Some(2014)
 
 val Scala212 = "2.12.20"
-val Scala213 = "2.13.16"
+val Scala213 = "2.13.18"
 ThisBuild / crossScalaVersions := Seq(Scala212, Scala213, "3.3.6")
 ThisBuild / scalaVersion := Scala213