chore(deps): update dependency sinon to v7.2.2

[renovate[bot]]

This PR contains the following updates:

Package	Type	Update	Change	References
sinon	devDependencies	patch	7.2.0 -> 7.2.2	homepage, source

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Release Notes

sinonjs/sinon

### [`v7.2.2`](https://renovatebot.com/gh/sinonjs/sinon/blob/master/CHANGELOG.md#​722--2018-12-12) [Compare Source](https://renovatebot.com/gh/sinonjs/sinon/compare/v7.2.1...v7.2.2) ================== - Fix mock.withArgs using matchers ([#​1961](https://renovatebot.com/gh/sinonjs/sinon/issues/1961)) ### [`v7.2.1`](https://renovatebot.com/gh/sinonjs/sinon/blob/master/CHANGELOG.md#​721--2018-12-12) [Compare Source](https://renovatebot.com/gh/sinonjs/sinon/compare/v7.2.0...v7.2.1) ================== - [#​1957](https://renovatebot.com/gh/sinonjs/sinon/issues/1957): check for truthiness before checking whether optional override is a stub - Upgrade [@​sinonjs/samsam](https://renovatebot.com/gh/sinonjs/samsam) - Upgrade [@​sinonjs/referee](https://renovatebot.com/gh/sinonjs/referee) to v3

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