chore(deps): bump the upgrades group

Bumps the upgrades group in /demo/vercel/react/use-client-transport with 3 updates: [next](https://github.com/vercel/next.js), [@types/node](https://github.com/DefinitelyTyped/DefinitelyTyped/tree/HEAD/types/node) and [eslint-config-next](https://github.com/vercel/next.js/tree/HEAD/packages/eslint-config-next).


Updates `next` from 15.5.15 to 16.2.3
- [Release notes](https://github.com/vercel/next.js/releases)
- [Changelog](https://github.com/vercel/next.js/blob/canary/release.js)
- [Commits](vercel/next.js@v15.5.15...v16.2.3)

Updates `@types/node` from 22.19.17 to 25.6.0
- [Release notes](https://github.com/DefinitelyTyped/DefinitelyTyped/releases)
- [Commits](https://github.com/DefinitelyTyped/DefinitelyTyped/commits/HEAD/types/node)

Updates `eslint-config-next` from 15.5.15 to 16.2.3
- [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/commits/v16.2.3/packages/eslint-config-next)

---
updated-dependencies:
- dependency-name: next
  dependency-version: 16.2.3
  dependency-type: direct:production
  update-type: version-update:semver-major
  dependency-group: upgrades
- dependency-name: "@types/node"
  dependency-version: 25.6.0
  dependency-type: direct:development
  update-type: version-update:semver-major
  dependency-group: upgrades
- dependency-name: eslint-config-next
  dependency-version: 16.2.3
  dependency-type: direct:development
  update-type: version-update:semver-major
  dependency-group: upgrades
...

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Author: dependabot[bot]