Bump gh-pages from 3.2.2 to 4.0.0 in /front

Bumps [gh-pages](https://github.com/tschaub/gh-pages) from 3.2.2 to 4.0.0.
- [Release notes](https://github.com/tschaub/gh-pages/releases)
- [Changelog](https://github.com/tschaub/gh-pages/blob/main/changelog.md)
- [Commits](tschaub/gh-pages@v3.2.2...v4.0.0)

---
updated-dependencies:
- dependency-name: gh-pages
  dependency-type: direct:development
  update-type: version-update:semver-major
...

Signed-off-by: dependabot[bot] <support@github.com>

Author: dependabot[bot]

front/package-lock.json

@@ -111,7 +111,7 @@
     "extract-text-webpack-plugin": "~2.1.0",
     "file-loader": "^2.0.0",
     "find-root": "^1.0.0",
-    "gh-pages": "^3.0.0",
+    "gh-pages": "^4.0.0",
     "html-webpack-plugin": "^2.28.0",
     "imports-loader": "^0.8.0",
     "inline-manifest-webpack-plugin": "^4.0.2",