chore(deps): bump markdown from 1.0.0-alpha.9 to 1.0.0-alpha.13

Bumps [markdown](https://github.com/wooorm/markdown-rs) from 1.0.0-alpha.9 to 1.0.0-alpha.13.
- [Release notes](https://github.com/wooorm/markdown-rs/releases)
- [Commits](wooorm/markdown-rs@1.0.0-alpha.9...1.0.0-alpha.13)

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

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