fix: upgrade markdownlint-cli from 0.31.1 to 0.43.0

Snyk has created this PR to upgrade markdownlint-cli from 0.31.1 to 0.43.0.

See this package in npm:
markdownlint-cli

See this project in Snyk:
https://app.snyk.io/org/ekmixon/project/c598cc85-edfc-4f87-b32d-cc8bcf2f1afa?utm_source=github&utm_medium=referral&page=upgrade-pr

package.json

@@ -5,7 +5,7 @@
   "main": "index.js",
   "dependencies": {},
   "devDependencies": {
-    "markdownlint-cli": "^0.31.0",
+    "markdownlint-cli": "^0.43.0",
     "textlint": "^12.0.0",
     "textlint-filter-rule-comments": "^1.2.2",
     "textlint-filter-rule-whitelist": "^2.0.0",