build(deps): bump JamesIves/github-pages-deploy-action

Bumps [JamesIves/github-pages-deploy-action](https://github.com/jamesives/github-pages-deploy-action) from 4.6.8 to 4.6.9.
- [Release notes](https://github.com/jamesives/github-pages-deploy-action/releases)
- [Commits](JamesIves/github-pages-deploy-action@v4.6.8...v4.6.9)

---
updated-dependencies:
- dependency-name: JamesIves/github-pages-deploy-action
  dependency-type: direct:production
  update-type: version-update:semver-patch
...

Signed-off-by: dependabot[bot] <[email protected]>

.github/workflows/generate-doc.yml

@@ -30,7 +30,7 @@ jobs:
           ./scripts/generate_doc.sh
 
       - name: Deploy documentation to GitHub Pages
-        uses: JamesIves/[email protected].8
+        uses: JamesIves/[email protected].9
         # we only deploy on push to main
         if: |
           github.event_name == 'push' && github.event.ref == 'refs/heads/main'