build(deps): bump next from 14.2.21 to 14.2.26 in /example

Bumps [next](https://github.com/vercel/next.js) from 14.2.21 to 14.2.26.
- [Release notes](https://github.com/vercel/next.js/releases)
- [Changelog](https://github.com/vercel/next.js/blob/canary/release.js)
- [Commits](vercel/next.js@v14.2.21...v14.2.26)

---
updated-dependencies:
- dependency-name: next
  dependency-version: 14.2.26
  dependency-type: direct:production
...

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

Author: dependabot[bot]