Bump next from 15.0.0 to 15.1.2 in /starters/nextjs/basic

Bumps [next](https://github.com/vercel/next.js) from 15.0.0 to 15.1.2.
- [Release notes](https://github.com/vercel/next.js/releases)
- [Changelog](https://github.com/vercel/next.js/blob/canary/release.js)
- [Commits](vercel/next.js@v15.0.0...v15.1.2)

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

Signed-off-by: dependabot[bot] <[email protected]>

Author: dependabot[bot]

starters/nextjs/basic/package-lock.json

@@ -9,7 +9,7 @@
     "lint": "next lint"
   },
   "dependencies": {
-    "next": "15.0.0",
+    "next": "15.1.2",
     "react": "^18",
     "react-dom": "^18"
   },