CLAP-200 Fix: 작업 생성 및 수정 시 파일 파라미터 null 허용

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- 관련: #202

Author: joowojr

src/main/java/clap/server/adapter/inbound/web/task/ManagementTaskController.java

@@ -34,7 +34,7 @@ public class ManagementTaskController {
     @Secured({"ROLE_MANAGER", "ROLE_USER"})
     public ResponseEntity<CreateTaskResponse> createTask(
             @RequestPart(name = "taskInfo") @Valid CreateTaskRequest createTaskRequest,
-            @RequestPart(name = "attachment", required = false) @NotNull  List<MultipartFile> attachments,
+            @RequestPart(name = "attachment", required = false) List<MultipartFile> attachments,
             @AuthenticationPrincipal SecurityUserDetails userInfo
             ){
             return ResponseEntity.ok(createTaskUsecase.createTask(userInfo.getUserId(), createTaskRequest, attachments));
@@ -46,7 +46,7 @@ public ResponseEntity<CreateTaskResponse> createTask(
     public ResponseEntity<UpdateTaskResponse> updateTask(
             @PathVariable @NotNull Long taskId,
             @RequestPart(name = "taskInfo") @Valid UpdateTaskRequest updateTaskRequest,
-            @RequestPart(name = "attachment", required = false) @NotNull  List<MultipartFile> attachments,
+            @RequestPart(name = "attachment", required = false) List<MultipartFile> attachments,
             @AuthenticationPrincipal SecurityUserDetails userInfo){
         return ResponseEntity.ok(updateTaskUsecase.updateTask(userInfo.getUserId(), taskId, updateTaskRequest, attachments));
     }