build(deps): bump sonner from 1.7.4 to 2.0.7 in /frontend

Bumps [sonner](https://github.com/emilkowalski/sonner) from 1.7.4 to 2.0.7.
- [Release notes](https://github.com/emilkowalski/sonner/releases)
- [Commits](https://github.com/emilkowalski/sonner/commits/v2.0.7)

---
updated-dependencies:
- dependency-name: sonner
  dependency-version: 2.0.7
  dependency-type: direct:production
  update-type: version-update:semver-major
...

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

frontend/package.json

@@ -60,7 +60,7 @@
     "react-markdown": "^10.1.0",
     "react-resizable-panels": "^2.1.7",
     "recharts": "^2.15.0",
-    "sonner": "^1.7.1",
+    "sonner": "^2.0.7",
     "tailwind-merge": "^2.5.5",
     "tailwindcss-animate": "^1.0.7",
     "vaul": "^0.9.6",