build(deps-dev): bump markdownlint-cli from 0.18.0 to 0.19.0

Bumps [markdownlint-cli](https://github.com/igorshubovych/markdownlint-cli) from 0.18.0 to 0.19.0.
- [Release notes](https://github.com/igorshubovych/markdownlint-cli/releases)
- [Commits](igorshubovych/markdownlint-cli@v0.18.0...v0.19.0)

Signed-off-by: dependabot-preview[bot] <support@dependabot.com>

package.json

@@ -31,7 +31,7 @@
     "esm": "3.2.25",
     "husky": "3.0.9",
     "lint-staged": "9.4.2",
-    "markdownlint-cli": "0.18.0",
+    "markdownlint-cli": "0.19.0",
     "npm-run-all": "4.1.5",
     "nyc": "14.1.1",
     "prettier": "1.18.2",