Bump rubocop-md from 1.2.0 to 1.2.1 (ViewComponent#1880)

Bumps [rubocop-md](https://github.com/rubocop-hq/rubocop-md) from 1.2.0 to 1.2.1.
- [Release notes](https://github.com/rubocop-hq/rubocop-md/releases)
- [Changelog](https://github.com/rubocop/rubocop-md/blob/master/CHANGELOG.md)
- [Commits](rubocop/rubocop-md@v1.2.0...v1.2.1)

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

Signed-off-by: dependabot[bot] <[email protected]>
Co-authored-by: dependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com>

Gemfile.lock

@@ -252,7 +252,7 @@ GEM
       unicode-display_width (>= 2.4.0, < 3.0)
     rubocop-ast (1.29.0)
       parser (>= 3.2.1.0)
-    rubocop-md (1.2.0)
+    rubocop-md (1.2.1)
       rubocop (>= 1.0)
     rubocop-performance (1.19.1)
       rubocop (>= 1.7.0, < 2.0)