Bump actions/checkout from 4 to 5 (#247)

Signed-off-by: dependabot[bot] <support@github.com>
Co-authored-by: dependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com>

Author: dependabot[bot]

.github/workflows/deploy-11ty-pages.yml

@@ -13,7 +13,7 @@ jobs:
       group: ${{ github.workflow }}-${{ github.ref }}
 
     steps:
-      - uses: actions/checkout@v4
+      - uses: actions/checkout@v5
 
       - name: Set up Python
         uses: actions/setup-python@v6