Update actions/setup-node action to v6

Author: renovate[bot]

.github/workflows/build-check.yml

@@ -30,7 +30,7 @@ jobs:
 
       # 3. Node.js 환경 설정
       - name: Set up Node.js
-        uses: actions/setup-node@v4
+        uses: actions/setup-node@v6
         with:
           node-version: '20'
           cache: 'pnpm'

.github/workflows/playwright.yml

@@ -10,7 +10,7 @@ jobs:
     runs-on: ubuntu-latest
     steps:
     - uses: actions/checkout@v4
-    - uses: actions/setup-node@v4
+    - uses: actions/setup-node@v6
       with:
         node-version: lts/*
     - name: Install pnpm

.github/workflows/storybook.yml

@@ -33,7 +33,7 @@ jobs:
           run_install: false
 
       - name: setup node.js
-        uses: actions/setup-node@v4
+        uses: actions/setup-node@v6
         with:
           node-version: 20
           cache: 'pnpm'