Merge pull request #996 from WordPress/dependabot/github_actions/gh-pages/actions/checkout-6

GH Pages/Actions: Bump actions/checkout from 5 to 6

Author: jrfnl

.github/workflows/test-ghpages.yml

@@ -16,7 +16,7 @@ jobs:
     runs-on: ubuntu-latest
     steps:
       - name: Checkout code
-        uses: actions/checkout@v5
+        uses: actions/checkout@v6
         with:
           persist-credentials: false