Update actions/setup-node action to v2.5.2

Author: renovate[bot]

.github/workflows/pages.yml

@@ -18,7 +18,7 @@ jobs:
           fetch-depth: 0
 
       - name: Setup Node.js
-        uses: actions/setup-node@v2.4.0
+        uses: actions/setup-node@v2.5.2
         with:
           # 选择要使用的 node 版本
           node-version: '14'