Bumps [sinon](https://github.com/sinonjs/sinon) from 7.2.7 to 7.3.1.
- [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/v7.2.7...v7.3.1)
Signed-off-by: dependabot[bot] <support@dependabot.com>