Update built.sbt to support Scala 3 cross compile

- Dropped support for Scala 2.12.x
- Fixed some sbt warnings caused by "in" syntax
- Replaced `versionDependent` helper with `CrossVersion`
- Updated some libraries to get Scala 3 versions

build.sbt

@@ -1,33 +1,34 @@
-scalaVersion in ThisBuild := "2.13.10"
+ThisBuild/scalaVersion := "3.2.1"
 
-crossScalaVersions in ThisBuild := Seq(scalaVersion.value, "2.12.17")
+ThisBuild/crossScalaVersions := Seq(scalaVersion.value, "2.13.10")
 
 val commonSettings = Seq(
   organization := "com.gu",
   homepage := Some(url("https://github.com/guardian/marley")),
   licenses := Seq("Apache V2" -> url("http://www.apache.org/licenses/LICENSE-2.0.html")),
   libraryDependencies ++= Seq(
-    "org.scala-lang" % "scala-reflect" % scalaVersion.value,
-    "com.twitter" %% "scrooge-core" % "19.10.0",
-    "org.apache.thrift" % "libthrift" % "0.12.0"
-  )
+    ("com.twitter" %% "scrooge-core" % "22.12.0").cross(CrossVersion.for3Use2_13),
+    "org.apache.thrift" % "libthrift" % "0.17.0"
+    ) ++ (CrossVersion.partialVersion(scalaVersion.value) match {
+      case Some((2, _)) => Seq(
+        "org.scala-lang" % "scala-reflect" % scalaVersion.value,
+        "org.scala-lang" % "scala-compiler" % scalaVersion.value % "provided",
+      )
+      case _ => Seq.empty
+  })
 )
 
-def versionDependent[T](scalaV: String, handlesAnnotations: Boolean, value: T):Option[T] = {
-  val preMacroAnnotationsScalaVersions = Set("2.11", "2.12")
-  Some(value).filter(_ => handlesAnnotations != preMacroAnnotationsScalaVersions.contains(scalaV))
-}
-
 lazy val core = project.settings(
   name := "marley",
-  Compile / scalacOptions += versionDependent(scalaBinaryVersion.value, handlesAnnotations=true, "-Ymacro-annotations"),
-  libraryDependencies ++= versionDependent(scalaBinaryVersion.value, handlesAnnotations=false,
-    compilerPlugin("org.scalamacros" % "paradise" % "2.1.1" cross CrossVersion.full)).toSeq ++ Seq(
+  Compile / scalacOptions ++= (CrossVersion.partialVersion(scalaVersion.value) match {
+    case Some((2, _)) => Some("-Ymacro-annotations")
+    case _ => None
+  }),
+  libraryDependencies ++= Seq(
     "org.apache.avro" % "avro" % "1.7.7",
-    "org.parboiled" %% "parboiled" % "2.1.8",
-    "org.scala-lang" % "scala-compiler" % scalaVersion.value % "provided",
-    "org.scalatest" %% "scalatest" % "3.0.9" % Test,
-    "org.scalacheck" %% "scalacheck" % "1.14.2" % Test
+    "org.parboiled" %% "parboiled" % "2.4.1",
+    "org.scalatest" %% "scalatest" % "3.2.15" % Test,
+    "org.scalacheck" %% "scalacheck" % "1.17.0" % Test
   ),
   Test/testOptions += Tests.Argument(
     TestFrameworks.ScalaTest,
@@ -37,10 +38,10 @@ lazy val core = project.settings(
 
 lazy val thriftExample = project.settings(commonSettings: _*)
 
-publishArtifact in Test := false
+Test/publishArtifact := false
 
 lazy val root = (project in file(".")).aggregate(core).settings(
-  aggregate in update := false,
+  update/aggregate := false,
   publishArtifact := false,
   publish := {},
   publishLocal := {}