chore(deps-dev): bump coveralls from 3.0.2 to 3.0.3

Bumps [coveralls](https://github.com/nickmerwin/node-coveralls) from 3.0.2 to 3.0.3.
- [Release notes](https://github.com/nickmerwin/node-coveralls/releases)
- [Commits](nickmerwin/node-coveralls@3.0.2...3.0.3)

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

package.json

@@ -85,7 +85,7 @@
     "ava": "^1.2.0",
     "chai": "^4.2.0",
     "chai-as-promised": "^7.1.1",
-    "coveralls": "^3.0.2",
+    "coveralls": "^3.0.3",
     "deep-equal-in-any-order": "^1.0.13",
     "eslint-config-standard": "^12.0.0",
     "eslint-plugin-import": "^2.15.0",