chore(deps-dev): bump next from 16.1.7 to 16.2.3

Bumps [next](https://github.com/vercel/next.js) from 16.1.7 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@v16.1.7...v16.2.3)

---
updated-dependencies:
- dependency-name: next
  dependency-version: 16.2.3
  dependency-type: direct:development
...

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

Author: dependabot[bot]

packages/server/package.json

@@ -146,7 +146,7 @@
     "@types/ws": "^8.18.1",
     "crossws": "^0.4.4",
     "fastify": "^5.8.3",
-    "next": "^16.1.7",
+    "next": "^16.2.3",
     "supertest": "^7.1.4",
     "ws": "^8.18.3",
     "zod": "^4.3.6"

playgrounds/next/package.json

@@ -20,7 +20,7 @@
     "@types/node": "^22.19.3",
     "@types/react": "^19.2.14",
     "@types/react-dom": "^19.2.3",
-    "next": "^16.1.7",
+    "next": "^16.2.3",
     "react": "^19.2.4",
     "react-dom": "^19.2.4",
     "server-only": "^0.0.1",