build(deps): bump actions/download-artifact in the github-actions group

Bumps the github-actions group with 1 update: [actions/download-artifact](https://github.com/actions/download-artifact).


Updates `actions/download-artifact` from 4 to 5
- [Release notes](https://github.com/actions/download-artifact/releases)
- [Commits](actions/download-artifact@v4...v5)

---
updated-dependencies:
- dependency-name: actions/download-artifact
  dependency-version: '5'
  dependency-type: direct:production
  update-type: version-update:semver-major
  dependency-group: github-actions
...

Signed-off-by: dependabot[bot] <[email protected]>

Author: dependabot[bot]

.github/workflows/jekyll-build.yml

@@ -86,7 +86,7 @@ jobs:
 
       - name: Download input artifact
         if: inputs.site_artifact != ''
-        uses: actions/download-artifact@v4
+        uses: actions/download-artifact@v5
         with:
           name: ${{ inputs.site_artifact }}
           path: project
@@ -243,7 +243,7 @@ jobs:
         run: rm -f -r ./gh-pages/*
 
       - name: Download artifact
-        uses: actions/download-artifact@v4
+        uses: actions/download-artifact@v5
         with:
           name: site
           path: gh-pages