Bump excoveralls from 0.14.6 to 0.15.0
Bumps [excoveralls](https://github.com/parroty/excoveralls) from 0.14.6 to 0.15.0.
- [Release notes](https://github.com/parroty/excoveralls/releases)
- [Changelog](https://github.com/parroty/excoveralls/blob/master/CHANGELOG.md)
- [Commits](https://github.com/parroty/excoveralls/compare/v0.14.6...v0.15.0)
---
updated-dependencies:
- dependency-name: excoveralls
dependency-type: direct:development
update-type: version-update:semver-minor
...
Signed-off-by: dependabot[bot] <support@github.com>