ci: bump JamesIves/github-pages-deploy-action in the all-actions group (#27)

Bumps the all-actions group with 1 update: [JamesIves/github-pages-deploy-action](https://github.com/jamesives/github-pages-deploy-action).


Updates `JamesIves/github-pages-deploy-action` from 4.7.4 to 4.7.6
- [Release notes](https://github.com/jamesives/github-pages-deploy-action/releases)
- [Commits](JamesIves/github-pages-deploy-action@4a3abc7...9d877ee)

---
updated-dependencies:
- dependency-name: JamesIves/github-pages-deploy-action
  dependency-version: 4.7.6
  dependency-type: direct:production
  update-type: version-update:semver-patch
  dependency-group: all-actions
...

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

Author: dependabot[bot]

.github/workflows/sphinx.yml

@@ -43,7 +43,7 @@ jobs:
 
     - name: Deploy docs to gh-pages
       if: ${{ github.event_name == 'push' }}
-      uses: JamesIves/github-pages-deploy-action@4a3abc783e1a24aeb44c16e869ad83caf6b4cc23  # v4.7.4
+      uses: JamesIves/github-pages-deploy-action@9d877eea73427180ae43cf98e8914934fe157a1a  # v4.7.6
       with:
         token: ${{ secrets.GITHUB_TOKEN }}
         branch: gh-pages