Update reflect annottations API

Author: nicolasstucki

modules/deriving/src/main/scala/shapeless3/deriving/annotation.scala

@@ -133,7 +133,8 @@ object AnnotationMacros {
       '{???}
     } else {
       val annoteeTpe = TypeRepr.of[T]
-      annoteeTpe.typeSymbol.annots.find(_.tpe <:< annotTpe) match {
+      // TODO try to use `getAnnotation` for performance
+      annoteeTpe.typeSymbol.annotations.find(_.tpe <:< annotTpe) match {
         case Some(tree) => '{ Annotation.mkAnnotation[A, T](${tree.asExprOf[A]}) }
         case None =>
           report.error(s"No Annotation of type ${annotTpe.show} for type ${annoteeTpe.show}")
@@ -159,7 +160,8 @@ object AnnotationMacros {
         }
 
       def findAnnotation[A: Type](annoteeSym: Symbol): Expr[Option[A]] =
-        annoteeSym.annots.find(_.tpe <:< TypeRepr.of[A]) match {
+        // TODO try to use `getAnnotation` for performance
+        annoteeSym.annotations.find(_.tpe <:< TypeRepr.of[A]) match {
           case Some(tree) => '{ Some(${tree.asExprOf[A]}) }
           case None       => '{ None }
         }