Merge pull request #4 from python-project-templates/dependabot/github_actions/peaceiris/actions-gh-pages-4

Bump peaceiris/actions-gh-pages from 3 to 4

Author: timkpaine

.github/workflows/docs.yml

@@ -22,7 +22,7 @@ jobs:
       - run: pip install .
       - run: make docs
       - name: Deploy
-        uses: peaceiris/actions-gh-pages@v3
+        uses: peaceiris/actions-gh-pages@v4
         with:
           publish_branch: gh-pages
           github_token: ${{ secrets.GITHUB_TOKEN }}