chore(deps): bump shiki from 1.12.1 to 1.18.0 (#1436)

Bumps [shiki](https://github.com/shikijs/shiki/tree/HEAD/packages/shiki) from 1.12.1 to 1.18.0.
- [Release notes](https://github.com/shikijs/shiki/releases)
- [Changelog](https://github.com/shikijs/shiki/blob/main/CHANGELOG.md)
- [Commits](https://github.com/shikijs/shiki/commits/v1.18.0/packages/shiki)

---
updated-dependencies:
- dependency-name: shiki
  dependency-type: direct:production
  update-type: version-update:semver-minor
...

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