Bump actions/deploy-pages from 2 to 3 (#1332)

Bumps [actions/deploy-pages](https://github.com/actions/deploy-pages) from 2 to 3.
- [Release notes](https://github.com/actions/deploy-pages/releases)
- [Commits](actions/deploy-pages@v2...v3)

---
updated-dependencies:
- dependency-name: actions/deploy-pages
  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>
Co-authored-by: Martijn Verburg <martijnverburg@gmail.com>

.github/workflows/deploy-to-gh-pages.yml

@@ -65,4 +65,4 @@ jobs:
  steps:
  - name: Deploy to GitHub Pages
  id: deployment
- uses: actions/deploy-pages@v2
+ uses: actions/deploy-pages@v3