Bump coveralls from 2.13.3 to 3.0.13

Bumps [coveralls](https://github.com/nickmerwin/node-coveralls) from 2.13.3 to 3.0.13.
- [Release notes](https://github.com/nickmerwin/node-coveralls/releases)
- [Commits](https://github.com/nickmerwin/node-coveralls/commits)

Signed-off-by: dependabot-preview[bot] <support@dependabot.com>

package.json

@@ -32,7 +32,7 @@
   "devDependencies": {
     "chai": "^4.1.1",
     "chai-as-promised": "^7.1.1",
-    "coveralls": "^2.13.1",
+    "coveralls": "^3.0.13",
     "dirty-chai": "^2.0.1",
     "istanbul": "^1.0.0-alpha.2",
     "mocha": "^3.5.0",