Update test-pages-build.yml

Author: rly

.github/workflows/test-pages-build.yml

@@ -16,7 +16,7 @@ jobs:
       fail-fast: false
     steps:
       - name: Checkout
-        uses: actions/checkout@v3
+        uses: actions/checkout@v4
 
       - name: Install and Build
         uses: actions/jekyll-build-pages@v1