enhance(backend): テストの高速化 (#12939)

* enhance(backend): テストの高速化

* add ls

* 自動的にマージされるようなので不要

* 起動方法を揃える

* fix test

packages/backend/test/unit/S3Service.ts

@@ -6,7 +6,13 @@
 process.env.NODE_ENV = 'test';
 
 import { Test } from '@nestjs/testing';
-import { UploadPartCommand, CompleteMultipartUploadCommand, CreateMultipartUploadCommand, S3Client, PutObjectCommand } from '@aws-sdk/client-s3';
+import {
+	CompleteMultipartUploadCommand,
+	CreateMultipartUploadCommand,
+	PutObjectCommand,
+	S3Client,
+	UploadPartCommand,
+} from '@aws-sdk/client-s3';
 import { mockClient } from 'aws-sdk-client-mock';
 import { GlobalModule } from '@/GlobalModule.js';
 import { CoreModule } from '@/core/CoreModule.js';