chore(deps): update dependency markdownlint-cli to v0.26.0

Author: renovate-bot

package-lock.json

@@ -60,7 +60,7 @@
     "hoek": "6.1.3",
     "husky": "5.0.6",
     "load-grunt-config": "3.0.1",
-    "markdownlint-cli": "0.25.0",
+    "markdownlint-cli": "0.26.0",
     "mocha": "8.2.1",
     "nodejs-dashboard": "0.5.1",
     "nodemon": "2.0.6",