CLAP-154 Fix: @transactional 어노테이션 service 코드에 추가

Author: starboxxxx

src/main/java/clap/server/adapter/inbound/web/dto/task/UpdateTaskStateRequest.java

@@ -7,7 +7,7 @@
 @Schema(description = "작업 상태 변경 요청")
 public record UpdateTaskStateRequest(
 
-        @Schema(description = "변경하고 싶은 작업 상태", example = "COMPLETED")
+        @Schema(description = "변경하고 싶은 작업 상태", example = "완료")
         @NotNull
         TaskStatus taskStatus
 ) {

src/main/java/clap/server/application/Task/UpdateTaskService.java

@@ -64,6 +64,7 @@ public UpdateTaskResponse updateTask(Long requesterId, Long taskId, UpdateTaskRe
     }
 
     @Override
+    @Transactional
     public UpdateTaskResponse updateTaskState(Long memberId, Long taskId, UpdateTaskStateRequest updateTaskStateRequest) {
         memberService.findActiveMember(memberId);
         Task task = taskService.findById(taskId);