chore(deps): update dependency coveralls to v3.0.4 (#374)

Author: renovate[bot]

package.json

@@ -55,7 +55,7 @@
   },
   "devDependencies": {
     "chai": "4.2.0",
-    "coveralls": "3.0.3",
+    "coveralls": "3.0.4",
     "eslint": "5.16.0",
     "eslint-config-standard": "12.0.0",
     "eslint-plugin-import": "2.17.3",