CI (아마도 진짜) 수정

Author: kmc7468

.github/workflows/ci.yml

@@ -17,9 +17,9 @@ jobs:
         working-directory: ./frontend
 
     steps:
-    - uses: actions/checkout@v2
+    - uses: actions/checkout@v5
     - name: Use Node.js 16
-      uses: actions/setup-node@v2
+      uses: actions/setup-node@v4
       with:
         node-version: 16.x
         cache: 'npm'