chore(package): update coveralls to version 3.0.8

Closes #39

Author: greenkeeper[bot]

package.json

@@ -35,7 +35,7 @@
   ],
   "devDependencies": {
     "commitizen": "3.0.5",
-    "coveralls": "3.0.1",
+    "coveralls": "3.0.8",
     "cz-conventional-changelog": "2.1.0",
     "eslint": "4.19.1",
     "eslint-config-luanmuniz": "0.2.1",