chore(deps): bump next from 15.1.0 to 15.1.3 in /webapp (#1450)

Bumps [next](https://github.com/vercel/next.js) from 15.1.0 to 15.1.3.
- [Release notes](https://github.com/vercel/next.js/releases)
- [Changelog](https://github.com/vercel/next.js/blob/canary/release.js)
- [Commits](vercel/next.js@v15.1.0...v15.1.3)

---
updated-dependencies:
- dependency-name: next
  dependency-type: direct:production
  update-type: version-update:semver-patch
...

Signed-off-by: dependabot[bot] <[email protected]>
Co-authored-by: dependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com>

webapp/package.json

@@ -43,7 +43,7 @@
     "i18next-browser-languagedetector": "^8.0.0",
     "lucide-react": "^0.469.0",
     "mermaid": "^11.2.0",
-    "next": "15.1.0",
+    "next": "15.1.3",
     "next-themes": "^0.4.3",
     "pino": "^9.3.2",
     "pino-pretty": "^13.0.0",