chore(deps): update dependency scala to v2.13.8

Author: renovate-bot

racing-car-katas/exercises/scala/build.sbt

@@ -2,7 +2,7 @@ name := "RacingCarKatas"
 
 version := "1.0"
 
-scalaVersion := "2.10.2"
+scalaVersion := "2.13.8"
 
 libraryDependencies ++= List(
   "org.scalatest" % "scalatest_2.10" % "2.0",