chore(deps): update actions/setup-node action to v6

Author: renovate[bot]

.github/actions/prepare/action.yml

@@ -8,7 +8,7 @@ runs:
       with:
         version: 8.15.9
     - name: Use Node.js ${{ matrix.node-version }}
-      uses: actions/setup-node@v4.4.0
+      uses: actions/setup-node@v6.2.0
       with:
         node-version: ${{ matrix.node-version }}
         cache: pnpm

.github/workflows/publish.yml

@@ -17,7 +17,7 @@ jobs:
         with:
           version: 8.15.9
       - name: Setup Node 🔧
-        uses: actions/setup-node@v4.4.0
+        uses: actions/setup-node@v6.2.0
         with:
           node-version: '22.22.0'
           cache: pnpm