chore(deps): bump twig/twig from 3.8.0 to 3.11.2 in /demo

Bumps [twig/twig](https://github.com/twigphp/Twig) from 3.8.0 to 3.11.2.
- [Changelog](https://github.com/twigphp/Twig/blob/v3.11.2/CHANGELOG)
- [Commits](twigphp/Twig@v3.8.0...v3.11.2)

---
updated-dependencies:
- dependency-name: twig/twig
  dependency-type: direct:production
...

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Author: dependabot[bot]