Bump next from 15.5.12 to 16.2.3 in /docs/web

Bumps [next](https://github.com/vercel/next.js) from 15.5.12 to 16.2.3.
- [Release notes](https://github.com/vercel/next.js/releases)
- [Changelog](https://github.com/vercel/next.js/blob/canary/release.js)
- [Commits](vercel/next.js@v15.5.12...v16.2.3)

---
updated-dependencies:
- dependency-name: next
  dependency-version: 16.2.3
  dependency-type: direct:production
  update-type: version-update:semver-major
...

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

Author: dependabot[bot]

docs/web/package-lock.json

@@ -8,7 +8,7 @@
     "start": "next start"
   },
   "dependencies": {
-    "next": "15.5.12",
+    "next": "16.2.3",
     "react": "19.0.0",
     "react-dom": "19.0.0"
   },