Fix visibility timeout (#20)

cdk/quiz_app/quiz_app_stack.py

@@ -69,7 +69,7 @@ def __init__(self, scope: Construct, construct_id: str, **kwargs) -> None:
             dead_letter_queue=sqs.DeadLetterQueue(
                 max_receive_count=1, queue=dlq_submission_queue
             ),
-            visibility_timeout=aws_cdk.Duration.seconds(10),
+            visibility_timeout=aws_cdk.Duration.minutes(1),
         )
         functions_and_roles = [
             (