Update scala-library to 2.13.18

Author: scala-steward

build.sbt

@@ -2,7 +2,7 @@ Global / onChangedBuildSource := IgnoreSourceChanges // not working well with we
 
 name                     := "OutwatchExample"
 ThisBuild / version      := "0.1.0-SNAPSHOT"
-ThisBuild / scalaVersion := "2.13.16"
+ThisBuild / scalaVersion := "2.13.18"
 
 val versions = new {
   val outwatch  = "1.1.0"