Bump markdown-it from 12.0.6 to 12.1.0 (#1321)

Bumps [markdown-it](https://github.com/markdown-it/markdown-it) from 12.0.6 to 12.1.0.
- [Release notes](https://github.com/markdown-it/markdown-it/releases)
- [Changelog](https://github.com/markdown-it/markdown-it/blob/master/CHANGELOG.md)
- [Commits](https://github.com/markdown-it/markdown-it/compare/12.0.6...12.1.0)

---
updated-dependencies:
- dependency-name: markdown-it
  dependency-type: direct:development
  update-type: version-update:semver-minor
...

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

Co-authored-by: dependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com>