chore(deps): update peaceiris/actions-gh-pages action to v4.0.0 (#227)

Author: renovate[bot]

Diff for: .github/workflows/gh-pages.yml

@@ -21,7 +21,7 @@ jobs:
           yarn install
           yarn build
       - name: Deploy
-        uses: peaceiris/actions-gh-pages@v3
+        uses: peaceiris/actions-gh-pages@4f9cc6602d3f66b9c108549d475ec49e8ef4d45e # v4.0.0
         with:
           github_token: ${{ secrets.GITHUB_TOKEN }}
           publish_dir: docs/build