Merge pull request #500 from emacs-lsp/dependabot/github_actions/peaceiris/actions-gh-pages-4

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

Author: jcs090218

.github/workflows/docs.yml

@@ -19,7 +19,7 @@ jobs:
           docker run --rm -v ${PWD}:/docs docker.pkg.github.com/emacs-lsp/docs-image/docs-image -- build
 
       - name: Deploy
-        uses: peaceiris/actions-gh-pages@v3
+        uses: peaceiris/actions-gh-pages@v4
         with:
           github_token: ${{ secrets.GITHUB_TOKEN }}
           publish_dir: ./site