fix: upgrade coveralls from 3.0.3 to 3.0.9 (#408)

Snyk has created this PR to upgrade coveralls from 3.0.3 to 3.0.9.

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

See this project in Snyk:
https://app.snyk.io/org/nodeshift-agg/project/0569fa2f-39b2-4a6a-9bdc-8ac878d28a88?utm_source=github&utm_medium=upgrade-pr

package.json

@@ -54,7 +54,7 @@
     "@babel/preset-env": "^7.8.6",
     "babel-loader": "^8.0.6",
     "codacy-coverage": "^3.4.0",
-    "coveralls": "^3.0.3",
+    "coveralls": "^3.0.9",
     "documentation": "^12.1.4",
     "nyc": "~15.0.0",
     "opener": "1.5.1",