Bump actions/upload-pages-artifact from 2.0.0 to 3.0.0 (#204)

Bumps [actions/upload-pages-artifact](https://github.com/actions/upload-pages-artifact) from 2.0.0 to 3.0.0.
- [Release notes](https://github.com/actions/upload-pages-artifact/releases)
- [Commits](actions/upload-pages-artifact@v2.0.0...v3.0.0)

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

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

.github/workflows/ci.yml

@@ -37,5 +37,5 @@ jobs:
           JEKYLL_ENV: production
           JEKYLL_GITHUB_TOKEN: ${{github.token}}
       - name: Upload artifact
-        uses: actions/upload-pages-artifact@v2.0.0
+        uses: actions/upload-pages-artifact@v3.0.0
         if: github.event_name != 'pull_request'