Update scala-library to 2.13.18

Author: scala-steward-bot

build.sbt

@@ -2,7 +2,7 @@ lazy val commonSettings = Seq(
   scalaVersion := "2.12.20",
   version := "0.4-SNAPSHOT",
   organization := "de.b-studios",
-  crossScalaVersions := Seq("2.12.20", "2.13.17", "3.7.4"),
+  crossScalaVersions := Seq("2.12.20", "2.13.18", "3.7.4"),
   scalacOptions ++= Seq(
     "-deprecation",
     "-encoding", "UTF-8",