chore(deps): bump next in /examples/checkout/commerce-widget-nextjs

Bumps [next](https://github.com/vercel/next.js) from 14.2.25 to 16.1.5.
- [Release notes](https://github.com/vercel/next.js/releases)
- [Changelog](https://github.com/vercel/next.js/blob/canary/release.js)
- [Commits](vercel/next.js@v14.2.25...v16.1.5)

---
updated-dependencies:
- dependency-name: next
  dependency-version: 16.1.5
  dependency-type: direct:production
...

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

Author: dependabot[bot]

examples/checkout/commerce-widget-nextjs/package.json

@@ -12,7 +12,7 @@
   "dependencies": {
     "@biom3/react": "^0.25.21",
     "@imtbl/sdk": "latest",
-    "next": "14.2.25",
+    "next": "15.5.10",
     "react": "^18",
     "react-dom": "^18"
   },