fix: upgrade coveralls from 3.0.13 to 3.1.0

Snyk has created this PR to upgrade coveralls from 3.0.13 to 3.1.0.

See this package in NPM:
https://www.npmjs.com/package/coveralls

See this project in Snyk:
https://app.snyk.io/org/randytarampi/project/e095fb25-a87f-4931-a0ba-08adee4c492b?utm_source=github&utm_medium=upgrade-pr

package.json

@@ -37,7 +37,7 @@
     "babel-plugin-istanbul": "^6.0.0",
     "babel-plugin-lodash": "^3.3.4",
     "babel-plugin-minify-replace": "^0.5.0",
-    "coveralls": "^3.0.13",
+    "coveralls": "^3.1.0",
     "del": "^5.1.0",
     "eslint-plugin-import": "^2.20.2",
     "gulp": "^4.0.2",