Bump happy-dom in /frontend in the dev-minor-updates group

Bumps the dev-minor-updates group in /frontend with 1 update: [happy-dom](https://github.com/capricorn86/happy-dom).


Updates `happy-dom` from 20.3.9 to 20.4.0
- [Release notes](https://github.com/capricorn86/happy-dom/releases)
- [Commits](https://github.com/capricorn86/happy-dom/compare/v20.3.9...v20.4.0)

---
updated-dependencies:
- dependency-name: happy-dom
  dependency-version: 20.4.0
  dependency-type: direct:development
  update-type: version-update:semver-minor
  dependency-group: dev-minor-updates
...

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

frontend/package.json

@@ -52,7 +52,7 @@
 		"@types/react-dom": "^19.2.3",
 		"@types/react-table": "^7.7.20",
 		"@vitejs/plugin-react": "^5.1.2",
-		"happy-dom": "^20.3.9",
+		"happy-dom": "^20.4.0",
 		"postcss": "^8.5.6",
 		"postcss-simple-vars": "^7.0.1",
 		"sass": "^1.97.3",