Bumps [sinon](https://github.com/sinonjs/sinon) from 2.4.1 to 7.2.3.
- [Release notes](https://github.com/sinonjs/sinon/releases)
- [Changelog](https://github.com/sinonjs/sinon/blob/master/CHANGELOG.md)
- [Commits](https://github.com/sinonjs/sinon/compare/v2.4.1...v7.2.3)
Signed-off-by: dependabot[bot] <support@dependabot.com>