build(deps): bump @nuxtjs/mdc from 0.12.1 to 0.13.1

Bumps [@nuxtjs/mdc](https://github.com/nuxt-modules/mdc) from 0.12.1 to 0.13.1.
- [Release notes](https://github.com/nuxt-modules/mdc/releases)
- [Changelog](https://github.com/nuxt-modules/mdc/blob/main/CHANGELOG.md)
- [Commits](nuxt-modules/mdc@v0.12.1...v0.13.1)

---
updated-dependencies:
- dependency-name: "@nuxtjs/mdc"
  dependency-type: direct:production
  update-type: version-update:semver-minor
...

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