Bump markdownlint-rule-helpers from 0.24.0 to 0.30.0

Bumps [markdownlint-rule-helpers](https://github.com/DavidAnson/markdownlint) from 0.24.0 to 0.30.0.
- [Changelog](https://github.com/DavidAnson/markdownlint/blob/main/CHANGELOG.md)
- [Commits](DavidAnson/markdownlint@v0.24.0...v0.30.0)

---
updated-dependencies:
- dependency-name: markdownlint-rule-helpers
  dependency-version: 0.30.0
  dependency-type: direct:production
  update-type: version-update:semver-minor
...

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

Author: dependabot[bot]

package-lock.json

@@ -23,6 +23,6 @@
     "commander": "^5.0.0",
     "fs-extra": "^8.1.0",
     "markdownlint": "^0.30.0",
-    "markdownlint-rule-helpers": "^0.24.0"
+    "markdownlint-rule-helpers": "^0.30.0"
   }
 }