국유인 연동 API 응답 로직 수정

src/main/java/com/kamco/cd/kamcoback/gukyuin/dto/ChngDetectMastDto.java

@@ -216,4 +216,16 @@ public class ChngDetectMastDto {
     private ZonedDateTime reviewerWorkDttm;
     private ZonedDateTime labelSendDttm;
   }
+
+  @Getter
+  @Setter
+  @NoArgsConstructor
+  @AllArgsConstructor
+  public static class ErrorResDto {
+
+    private String timestamp;
+    private Integer status;
+    private String error;
+    private String path;
+  }
 }