chore(deps): Bump actions/upload-pages-artifact from 1 to 3 (#666)

Bumps [actions/upload-pages-artifact](https://github.com/actions/upload-pages-artifact) from 1 to 3.
- [Release notes](https://github.com/actions/upload-pages-artifact/releases)
- [Commits](actions/upload-pages-artifact@v1...v3)

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

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

.github/workflows/deploy-docs.yml

@@ -64,7 +64,7 @@ jobs:
         working-directory: ./docs
         run: bundle exec middleman build
       - name: Publish
-        uses: actions/upload-pages-artifact@v1
+        uses: actions/upload-pages-artifact@v3
         with:
           PATH: ./public