Bump actions/download-artifact from 7 to 8 (#13)

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

Author: dependabot[bot]

.github/workflows/ci-cd.yml

@@ -46,7 +46,7 @@ jobs:
       pull-requests: write  # For comments in PRs
     steps:
       - name: Download site artifact
-        uses: actions/download-artifact@v7
+        uses: actions/download-artifact@v8
         with:
           # The name of artifacts created by `actions/upload-pages-artifact` is always "github-pages"
           name: github-pages