chore(security) remove echint vulnerabilities (Kong#139)

Author: darrenjennings

package-lock.json

@@ -68,7 +68,7 @@
   },
   "devDependencies": {
     "codeclimate-test-reporter": "^0.5.1",
-    "echint": "^3.0.0",
+    "echint": "^4.0.2",
     "glob": "^6.0.1",
     "istanbul": "^0.4.0",
     "mocha": "^6.1.4",