Update dependency eslint-plugin-markdown to v3

Author: renovate[bot]

package.json

@@ -108,7 +108,7 @@
     "eslint-plugin-eslint-plugin": "^5.0.0",
     "eslint-plugin-json-schema-validator": "^3.0.0",
     "eslint-plugin-jsonc": "^2.0.0",
-    "eslint-plugin-markdown": "^2.1.0",
+    "eslint-plugin-markdown": "^3.0.0",
     "eslint-plugin-node": "^11.1.0",
     "eslint-plugin-node-dependencies": "^0.9.0",
     "eslint-plugin-prettier": "^4.0.0",