chore(package): update coveralls to version 3.0.9

Closes #376

Author: greenkeeper[bot]

package.json

@@ -59,7 +59,7 @@
     "@types/node-fetch": "2.1.6",
     "@types/web3": "1.0.18",
     "chai": "4.2.0",
-    "coveralls": "3.0.2",
+    "coveralls": "3.0.9",
     "ganache-cli": "6.3.0",
     "husky": "1.3.1",
     "lint-staged": "8.1.4",