chore(deps-dev): bump coveralls from 3.0.5 to 3.0.6
chore(deps-dev): bump coveralls from 3.0.5 to 3.0.6

Bumps [coveralls](https://github.com/nickmerwin/node-coveralls) from 3.0.5 to 3.0.6.
- [Release notes](https://github.com/nickmerwin/node-coveralls/releases)
- [Commits](https://github.com/nickmerwin/node-coveralls/commits)

Signed-off-by: dependabot-preview[bot] <5bdcd3c0d4d24ae3e71b3b452a024c6324c7e4bb@dependabot.com>
elmadev/node-elma,elmadev/node-elma