hotfix: 조직도에 setter 추가

Author: dohy-eon

src/main/java/dmu/dasom/api/domain/executive/dto/ExecutiveRequestDto.java

@@ -10,6 +10,7 @@
 import lombok.NoArgsConstructor;
 
 @Getter
+@Setter
 @NoArgsConstructor
 @AllArgsConstructor
 @Schema(name = "ExecutiveRequestDto", description = "임원진 요청 DTO")