chore(deps): bump mdast-util-to-markdown from 2.1.0 to 2.1.1

Bumps [mdast-util-to-markdown](https://github.com/syntax-tree/mdast-util-to-markdown) from 2.1.0 to 2.1.1.
- [Release notes](https://github.com/syntax-tree/mdast-util-to-markdown/releases)
- [Commits](syntax-tree/mdast-util-to-markdown@2.1.0...2.1.1)

---
updated-dependencies:
- dependency-name: mdast-util-to-markdown
  dependency-type: direct:production
  update-type: version-update:semver-patch
...

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

Author: dependabot[bot]