chore(deps): bump shiki from 3.19.0 to 3.20.0

Bumps [shiki](https://github.com/shikijs/shiki/tree/HEAD/packages/shiki) from 3.19.0 to 3.20.0.
- [Release notes](https://github.com/shikijs/shiki/releases)
- [Commits](https://github.com/shikijs/shiki/commits/v3.20.0/packages/shiki)

---
updated-dependencies:
- dependency-name: shiki
  dependency-version: 3.20.0
  dependency-type: indirect
  update-type: version-update:semver-minor
...

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

Author: dependabot[bot]