chore(deps): bump prismjs from 1.26.0 to 1.29.0

Bumps [prismjs](https://github.com/PrismJS/prism) from 1.26.0 to 1.29.0.
- [Release notes](https://github.com/PrismJS/prism/releases)
- [Changelog](https://github.com/PrismJS/prism/blob/master/CHANGELOG.md)
- [Commits](PrismJS/prism@v1.26.0...v1.29.0)

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

Signed-off-by: dependabot[bot] <support@github.com>

Author: dependabot[bot]