Bump peaceiris/actions-gh-pages from 3.9.0 to 3.9.1 (#1548)

Bumps [peaceiris/actions-gh-pages](https://github.com/peaceiris/actions-gh-pages) from 3.9.0 to 3.9.1.
- [Release notes](https://github.com/peaceiris/actions-gh-pages/releases)
- [Changelog](https://github.com/peaceiris/actions-gh-pages/blob/main/CHANGELOG.md)
- [Commits](de7ea6f8ef...64b46b4226)

---
updated-dependencies:
- dependency-name: peaceiris/actions-gh-pages
  dependency-type: direct:production
  update-type: version-update:semver-patch
...

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

.github/workflows/gh-pages.yml

@@ -32,7 +32,7 @@ jobs:
         working-directory: web
 
       - name: Deploy
-        uses: peaceiris/actions-gh-pages@de7ea6f8efb354206b205ef54722213d99067935
+        uses: peaceiris/actions-gh-pages@64b46b4226a4a12da2239ba3ea5aa73e3163c75b
         with:
           github_token: ${{ secrets.GITHUB_TOKEN }}
           publish_dir: web/samples_index/public