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

Bumps [peaceiris/actions-gh-pages](https://github.com/peaceiris/actions-gh-pages) from 3 to 4.
- [Release notes](https://github.com/peaceiris/actions-gh-pages/releases)
- [Changelog](https://github.com/peaceiris/actions-gh-pages/blob/main/CHANGELOG.md)
- [Commits](peaceiris/actions-gh-pages@v3...v4)

---
updated-dependencies:
- dependency-name: peaceiris/actions-gh-pages
  dependency-type: direct:production
  update-type: version-update:semver-major
...

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

.github/workflows/deploy.yml

@@ -63,7 +63,7 @@ jobs:
           private_key: ${{ secrets.APP_PRIVATE_KEY }}
 
       - name: Deploy
-        uses: peaceiris/actions-gh-pages@v3
+        uses: peaceiris/actions-gh-pages@v4
         with:
           # Use a personal token configured as a repository-specific secret
           personal_token: ${{ steps.generate-token.outputs.token }}

.github/workflows/deploy_pr_preview.yml

@@ -52,7 +52,7 @@ jobs:
           echo "pr_number=$PR_NUMBER" >> "$GITHUB_OUTPUT"
 
       - name: Deploy Pull Request preview
-        uses: peaceiris/actions-gh-pages@v3
+        uses: peaceiris/actions-gh-pages@v4
         with:
           # Use GITHUB_TOKEN allowing to write to local repository
           github_token: ${{ secrets.GITHUB_TOKEN }}