chore(deps): bump next from 15.2.1 to 15.2.3 (#1982)

Bumps [next](https://github.com/vercel/next.js) from 15.2.1 to 15.2.3.
- [Release notes](https://github.com/vercel/next.js/releases)
- [Changelog](https://github.com/vercel/next.js/blob/canary/release.js)
- [Commits](https://github.com/vercel/next.js/compare/v15.2.1...v15.2.3)

---
updated-dependencies:
- dependency-name: next
  dependency-type: direct:production
...

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

demo/nextjs/package.json

@@ -69,7 +69,7 @@
     "lucide-react": "^0.477.0",
     "mini-svg-data-uri": "^1.4.4",
     "mysql2": "^3.11.5",
-    "next": "^15.2.0",
+    "next": "^15.2.3",
     "next-themes": "^0.3.0",
     "prisma": "^5.22.0",
     "react": "^19.0.0",

packages/better-auth/package.json

@@ -604,7 +604,7 @@
     "listhen": "^1.9.0",
     "mongodb": "^6.11.0",
     "mysql2": "^3.11.5",
-    "next": "^15.1.2",
+    "next": "^15.2.3",
     "oauth2-mock-server": "^7.2.0",
     "pg": "^8.13.1",
     "prisma": "^5.22.0",