Bump coveralls from 3.0.9 to 3.0.11

Bumps [coveralls](https://github.com/nickmerwin/node-coveralls) from 3.0.9 to 3.0.11.
- [Release notes](https://github.com/nickmerwin/node-coveralls/releases)
- [Commits](nickmerwin/node-coveralls@3.0.9...3.0.11)

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

Author: dependabot-preview[bot]

package-lock.json

@@ -48,7 +48,7 @@
   },
   "devDependencies": {
     "browserify": "^16.5.0",
-    "coveralls": "^3.0.9",
+    "coveralls": "^3.0.11",
     "istanbul": "^1.1.0-alpha.1",
     "jest": "^24.9.0",
     "supertest": "^4.0.2",