Chore: upgrade dev deps (fixes #188) (#198)

Author: aladdin-add

package.json

@@ -52,8 +52,8 @@
     "espree": "^7.3.0",
     "estraverse": "^5.0.0",
     "lodash": "^4.17.2",
-    "markdownlint-cli": "^0.27.1",
-    "mocha": "^7.1.1",
+    "markdownlint-cli": "^0.28.1",
+    "mocha": "^9.1.2",
     "npm-run-all": "^4.1.5",
     "nyc": "^15.1.0"
   },