build(deps-dev): bump eslint from 9.27.0 to 9.28.0 in /web-app

Bumps [eslint](https://github.com/eslint/eslint) from 9.27.0 to 9.28.0.
- [Release notes](https://github.com/eslint/eslint/releases)
- [Changelog](https://github.com/eslint/eslint/blob/main/CHANGELOG.md)
- [Commits](eslint/eslint@v9.27.0...v9.28.0)

---
updated-dependencies:
- dependency-name: eslint
  dependency-version: 9.28.0
  dependency-type: direct:development
  update-type: version-update:semver-minor
...

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

Author: dependabot[bot]

web-app/package-lock.json

@@ -27,7 +27,7 @@
     "@types/react-dom": "19.1.5",
     "@vitejs/plugin-react": "4.5.0",
     "@vitest/coverage-v8": "3.2.0",
-    "eslint": "9.27.0",
+    "eslint": "9.28.0",
     "eslint-plugin-headers": "1.3.3",
     "eslint-plugin-react-hooks": "6.0.0",
     "eslint-plugin-react-refresh": "0.4.20",