build(deps-dev): bump mdv from 1.3.2 to 1.3.4

Bumps [mdv](https://github.com/Mermade/mdv) from 1.3.2 to 1.3.4.
- [Commits](Mermade/mdv@v1.3.2...v1.3.4)

---
updated-dependencies:
- dependency-name: mdv
  dependency-type: direct:development
  update-type: version-update:semver-patch
...

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