Bump JamesIves/github-pages-deploy-action from 3.7.1 to 4.6.8

Bumps [JamesIves/github-pages-deploy-action](https://github.com/jamesives/github-pages-deploy-action) from 3.7.1 to 4.6.8.
- [Release notes](https://github.com/jamesives/github-pages-deploy-action/releases)
- [Commits](JamesIves/github-pages-deploy-action@3.7.1...v4.6.8)

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

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

.github/workflows/build-docs.yml

@@ -25,7 +25,7 @@ jobs:
         make gen-docs
         touch docs/_build/html/.nojekyll
     - name: Publish Docs
-      uses: JamesIves/github-pages-deploy-action@3.7.1
+      uses: JamesIves/github-pages-deploy-action@v4.6.8
       with:
         GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}
         BASE_BRANCH: main # The branch the action should deploy from.