Bump JamesIves/github-pages-deploy-action from 4.6.8 to 4.6.9 (#845)

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]>
Co-authored-by: dependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com>
Co-authored-by: Marc Becker <[email protected]>

.github/workflows/build-book.yml

@@ -82,7 +82,7 @@ jobs:
 
       - name: Deploy
         if: ${{ github.event_name == 'push' }}
-        uses: JamesIves/[email protected].8
+        uses: JamesIves/[email protected].9
         with:
           token: ${{ secrets.GITHUB_TOKEN }}
           branch: gh-pages