Bump actions/upload-pages-artifact from 4 to 5

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

---
updated-dependencies:
- dependency-name: actions/upload-pages-artifact
  dependency-version: '5'
  dependency-type: direct:production
  update-type: version-update:semver-major
...

Signed-off-by: dependabot[bot] <support@github.com>

Author: dependabot[bot]

.github/workflows/deploy-demo.yml

@@ -57,7 +57,7 @@ jobs:
             - name: Setup Pages
               uses: actions/configure-pages@v6
             - name: Upload artifact
-              uses: actions/upload-pages-artifact@v4
+              uses: actions/upload-pages-artifact@v5
               with:
                   path: 'demo'
             - name: Deploy to GitHub Pages