build(deps): bump recharts from 2.15.4 to 3.8.1 in /frontend

Bumps [recharts](https://github.com/recharts/recharts) from 2.15.4 to 3.8.1.
- [Release notes](https://github.com/recharts/recharts/releases)
- [Changelog](https://github.com/recharts/recharts/blob/main/CHANGELOG.md)
- [Commits](https://github.com/recharts/recharts/compare/v2.15.4...v3.8.1)

---
updated-dependencies:
- dependency-name: recharts
  dependency-version: 3.8.1
  dependency-type: direct:production
  update-type: version-update:semver-major
...

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

frontend/package.json

@@ -59,7 +59,7 @@
     "react-hot-toast": "^2.5.0",
     "react-markdown": "^10.1.0",
     "react-resizable-panels": "^2.1.7",
-    "recharts": "^2.15.0",
+    "recharts": "^3.8.1",
     "sonner": "^1.7.1",
     "tailwind-merge": "^2.5.5",
     "tailwindcss-animate": "^1.0.7",