Update sinon requirement from ^6.0.0 to ^7.2.3
Update sinon requirement from ^6.0.0 to ^7.2.3

Updates the requirements on [sinon](https://github.com/sinonjs/sinon) to permit the latest version.
- [Release notes](https://github.com/sinonjs/sinon/releases)
- [Changelog](https://github.com/sinonjs/sinon/blob/master/CHANGELOG.md)
- [Commits](https://github.com/sinonjs/sinon/commits/v7.2.3)

Signed-off-by: dependabot[bot] <5bdcd3c0d4d24ae3e71b3b452a024c6324c7e4bb@dependabot.com>
honeybadger-io/honeybadger-node