Updae to scala 3

scala/build.sbt

@@ -1,8 +1,11 @@
-name := "GildedRose"
+val scala3Version = "3.6.4"
 
-version := "1.0"
+lazy val root = project
+  .in(file("."))
+  .settings(
+    name := "GildedRose",
+    version := "1.0",
+    scalaVersion := scala3Version,
 
-scalaVersion := "2.13.1"
-
-resolvers += DefaultMavenRepository
-libraryDependencies += "org.scalatest" %% "scalatest" % "3.1.1" % "test"
+    libraryDependencies += "org.scalatest" %% "scalatest" % "3.2.19" % "test"
+  )