chore(package): update eslint-plugin-mocha to version 6.2.0

Closes #27

Author: greenkeeper[bot]

package.json

@@ -12,7 +12,7 @@
     "chai": "^4.0.1",
     "eslint": "^4.1.1",
     "eslint-config-democracyos": "^2.0.0",
-    "eslint-plugin-mocha": "~4.11.0",
+    "eslint-plugin-mocha": "~6.2.0",
     "mocha": "~3.5.0",
     "mocha-eslint": "~3.0.1"
   },