Update checkout action version in workflow

Author: defencore

.github/workflows/pages.yml

@@ -19,7 +19,7 @@ jobs:
     runs-on: ubuntu-latest
     steps:
       - name: Check out source
-        uses: actions/checkout@v6
+        uses: actions/checkout@v4
       - name: Set up Node.js
         uses: actions/setup-node@v4
         with: