Bumps [kramdown](https://github.com/gettalong/kramdown) from 1.17.0 to 2.3.1.
- [Release notes](https://github.com/gettalong/kramdown/releases)
- [Changelog](https://github.com/gettalong/kramdown/blob/master/doc/news.page)
- [Commits](https://github.com/gettalong/kramdown/commits)

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

• Commit 30c21b3
• #8: Bump kramdown from 1.17.0 to 2.3.1
• Branch master

dependabot[bot] authored GitHub committed