Bump @sinonjs/samsam from 5.0.2 to 5.0.3

Bumps [@sinonjs/samsam](https://github.com/sinonjs/samsam) from 5.0.2 to 5.0.3.
- [Release notes](https://github.com/sinonjs/samsam/releases)
- [Changelog](https://github.com/sinonjs/samsam/blob/master/CHANGES.md)
- [Commits](sinonjs/samsam@v5.0.2...v5.0.3)

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