Bump actions/deploy-pages from 3 to 4 (#7)

Bumps [actions/deploy-pages](https://github.com/actions/deploy-pages) from 3 to 4.
- [Release notes](https://github.com/actions/deploy-pages/releases)
- [Commits](actions/deploy-pages@v3...v4)

---
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: Oleh Andrushko <53293405+olich97@users.noreply.github.com>

.github/workflows/docs.yml

@@ -49,4 +49,4 @@ jobs:
           path: 'docs/book'
       - name: Deploy to GitHub Pages
         id: deployment
-        uses: actions/deploy-pages@v3
+        uses: actions/deploy-pages@v4