chore(package): update coveralls to version 3.0.6

Closes #90

Author: greenkeeper[bot]

package.json

@@ -28,7 +28,7 @@
   },
   "homepage": "https://github.com/elliotttf/jsonapi-validator#readme",
   "devDependencies": {
-    "coveralls": "^2.11.9",
+    "coveralls": "^3.0.6",
     "eslint": "^4.4.1",
     "eslint-config-airbnb-base": "^11.0.1",
     "eslint-plugin-import": "^2.7.0",