build(deps-dev): bump coveralls from 3.1.0 to 3.1.1 (#488)

Bumps [coveralls](https://github.com/nickmerwin/node-coveralls) from 3.1.0 to 3.1.1.
- [Release notes](https://github.com/nickmerwin/node-coveralls/releases)
- [Commits](nickmerwin/node-coveralls@v3.1.0...3.1.1)

---
updated-dependencies:
- dependency-name: coveralls
  dependency-type: direct:development
  update-type: version-update:semver-patch
...

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