Upgrade scala-library from 2.13.14 to 2.13.15 (#354)

Co-authored-by: scala-steward <162267+scala-steward-for-moia[bot]@users.noreply.github.com>
Co-authored-by: Bendix Sältz <[email protected]>

build.sbt

@@ -67,7 +67,7 @@ lazy val commonSettings = Seq.concat(
 )
 
 lazy val compilerSettings = Seq(
-  scalaVersion                                                                     := "2.13.14",
+  scalaVersion                                                                     := "2.13.15",
   Compile / packageBin / mappings += (ThisBuild / baseDirectory).value / "LICENSE" -> "LICENSE",
   scalacOptions ++= scalacOptions_2_13
 )