Bump markdownlint-cli2 in the npm-dependencies group

Bumps the npm-dependencies group with 1 update: [markdownlint-cli2](https://github.com/DavidAnson/markdownlint-cli2).


Updates `markdownlint-cli2` from 0.19.1 to 0.20.0
- [Changelog](https://github.com/DavidAnson/markdownlint-cli2/blob/main/CHANGELOG.md)
- [Commits](DavidAnson/markdownlint-cli2@v0.19.1...v0.20.0)

---
updated-dependencies:
- dependency-name: markdownlint-cli2
  dependency-version: 0.20.0
  dependency-type: direct:development
  update-type: version-update:semver-minor
  dependency-group: npm-dependencies
...

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

Author: dependabot[bot]

package-lock.json

@@ -26,6 +26,6 @@
   },
   "devDependencies": {
     "linkinator": "^7.5.1",
-    "markdownlint-cli2": "0.19.1"
+    "markdownlint-cli2": "0.20.0"
   }
 }