Bump next from 15.0.2 to 16.1.5 in /examples/blog-starter

Bumps [next](https://github.com/vercel/next.js) from 15.0.2 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@v15.0.2...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/blog-starter/package.json

@@ -9,7 +9,7 @@
     "classnames": "^2.5.1",
     "date-fns": "^3.6.0",
     "gray-matter": "^4.0.3",
-    "next": "15.0.2",
+    "next": "16.1.5",
     "react": "19.0.0-rc-02c0e824-20241028",
     "react-dom": "19.0.0-rc-02c0e824-20241028",
     "remark": "^15.0.1",