chore: 노드버전 22.12.0 명시

Author: seongwon030

.github/workflows/codecov.yml

@@ -17,6 +17,8 @@ jobs:
 
       - name: Set up Node
         uses: actions/setup-node@v4
+        with:
+          node-version: 22.12.0
 
       - name: Install dependencies
         run: npm ci