dynamodb 페이징 처리

src/main/java/com/caliverse/admin/dynamodb/entity/MailItem.java

@@ -1,11 +1,15 @@
 package com.caliverse.admin.dynamodb.entity;
 
 import com.fasterxml.jackson.annotation.JsonProperty;
+import lombok.AllArgsConstructor;
 import lombok.Builder;
 import lombok.Data;
+import lombok.NoArgsConstructor;
 
 @Data
 @Builder
+@NoArgsConstructor
+@AllArgsConstructor
 public class MailItem {
     @JsonProperty("ItemId")
     private Integer itemId;