Update implicit conversion

Author: nicolasstucki

library/src/scala/reflect/Selectable.scala

@@ -24,8 +24,8 @@ class Selectable(val receiver: Any) extends AnyVal with scala.Selectable {
 }
 
 object Selectable {
-  implicit def reflectiveSelectable(receiver: Any): scala.Selectable = receiver match {
+  given reflectiveSelectable as Conversion[Any, scala.Selectable] = _ match {
     case receiver: scala.Selectable => receiver
-    case _                          => new Selectable(receiver)
+    case receiver                   => new Selectable(receiver)
   }
 }