Bump peaceiris/actions-gh-pages from 3.9.0 to 3.9.2

Bumps [peaceiris/actions-gh-pages](https://github.com/peaceiris/actions-gh-pages) from 3.9.0 to 3.9.2.
- [Release notes](https://github.com/peaceiris/actions-gh-pages/releases)
- [Changelog](https://github.com/peaceiris/actions-gh-pages/blob/main/CHANGELOG.md)
- [Commits](peaceiris/actions-gh-pages@de7ea6f...bd8c6b0)

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

Signed-off-by: dependabot[bot] <support@github.com>

.github/workflows/docs.yml

@@ -32,7 +32,7 @@ jobs:
         run:  echo "<meta http-equiv=refresh content=0;url=cumulus_client_collator/index.html>" > ./target/doc/index.html
 
       - name: Deploy documentation
-        uses: peaceiris/actions-gh-pages@de7ea6f8efb354206b205ef54722213d99067935 # v3.9.0
+        uses: peaceiris/actions-gh-pages@bd8c6b06eba6b3d25d72b7a1767993c0aeee42e7 # v3.9.2
         with:
           github_token: ${{ secrets.GITHUB_TOKEN }}
           publish_branch: gh-pages