Small fixes to make the code compilable for Scala 2.13

Author: peterbanda

openai-client/src/main/scala/io/cequence/openaiscala/JsonUtil.scala

@@ -21,7 +21,7 @@ object JsonUtil {
       }
 
     def asSafeArray[T](implicit fjs: Reads[T]): Seq[T] =
-      json.asSafe[JsArray].value.map(
+      json.asSafe[JsArray].value.toSeq.map(
         _.asSafe[T]
       )
   }

openai-guice/src/main/scala/io/cequence/openaiscala/service/GuiceContainer.scala

@@ -19,11 +19,11 @@ trait GuiceContainer {
   protected def instance[T: Manifest] = injector.instance[T]
 
   protected def result[T](future: Future[T]) =
-    Await.result(future, 100 minutes)
+    Await.result(future, 100.minutes)
 
   protected def terminate: Unit = {
     val system = instance[ActorSystem]
     system.terminate
-    Await.result(system.whenTerminated, 1 day)
+    Await.result(system.whenTerminated, 1.day)
   }
 }