Bump coveralls from 3.0.3 to 3.0.4

Bumps [coveralls](https://github.com/nickmerwin/node-coveralls) from 3.0.3 to 3.0.4.
- [Release notes](https://github.com/nickmerwin/node-coveralls/releases)
- [Commits](nickmerwin/node-coveralls@3.0.3...3.0.4)

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

package.json

@@ -13,7 +13,7 @@
     "jsdom": "^15.1.1"
   },
   "devDependencies": {
-    "coveralls": "^3.0.3",
+    "coveralls": "^3.0.4",
     "eslint": "^4.19.0",
     "eslint-config-standard": "^11.0.0",
     "eslint-plugin-import": "^2.17.3",

yarn.lock

@@ -526,9 +526,9 @@ core-util-is@1.0.2, core-util-is@~1.0.0:
   version "1.0.2"
   resolved "https://registry.yarnpkg.com/core-util-is/-/core-util-is-1.0.2.tgz#b5fd54220aa2bc5ab57aab7140c940754503c1a7"
 
-coveralls@^3.0.3:
-  version "3.0.3"
-  resolved "https://registry.yarnpkg.com/coveralls/-/coveralls-3.0.3.tgz#83b1c64aea1c6afa69beaf50b55ac1bc4d13e2b8"
+coveralls@^3.0.4:
+  version "3.0.4"
+  resolved "https://registry.yarnpkg.com/coveralls/-/coveralls-3.0.4.tgz#f50233c9c62fd0973f710fce85fd19dba24cff4b"
   dependencies:
     growl "~> 1.10.0"
     js-yaml "^3.11.0"