Upgrade to latest Scala 3

Author: mkurz

project/Dependencies.scala

@@ -3,7 +3,7 @@ import sbt._
 object Dependencies {
   // scalaVersion needs to be kept in sync with ci
   val Scala213 = "2.13.18"
-  val Scala3 = "3.3.7"
+  val Scala3 = "3.8.3"
   val ScalaVersions = Seq(Scala213, Scala3)
 
   val PlayVersion = sys.props.getOrElse("play.version", sys.env.getOrElse("PLAY_VERSION", "3.1.0-M6"))

samples/compile-timeDI/build.sbt

@@ -9,7 +9,7 @@ ThisBuild / dynverSonatypeSnapshots := true
 
 scalaVersion := "2.13.18"
 
-crossScalaVersions := Seq("2.13.18", "3.3.6")
+crossScalaVersions := Seq("2.13.18", "3.8.3")
 
 libraryDependencies ++= Seq(
   "org.playframework" %% "play-mailer" % version.value,

samples/runtimeDI/build.sbt

@@ -9,7 +9,7 @@ ThisBuild / dynverSonatypeSnapshots := true
 
 scalaVersion := "2.13.18"
 
-crossScalaVersions := Seq("2.13.18", "3.3.6")
+crossScalaVersions := Seq("2.13.18", "3.8.3")
 
 libraryDependencies ++= Seq(
   "org.playframework" %% "play-mailer-guice" % version.value,