chore(deps-dev): bump sinon from 7.5.0 to 8.1.0

[dependabot-preview[bot]]

Bumps sinon from 7.5.0 to 8.1.0.

Changelog

Sourced from sinon's changelog.

8.1.0 / 2020-01-16

• Support negative indices in getCall (#2199)

8.0.4 / 2020-01-06

• Remove misleading 'own' from exception message

8.0.3 / 2020-01-06

• Move .printf to proxy

8.0.2 / 2019-12-30

• Upgrade @sinonjs/samsam to latest
• Upgrade nise to 3.0.1

8.0.1 / 2019-12-23

• Force upgrade @sinonjs/commons (#2181)
• Update docs/changelog.md and set new release id in docs/_config.yml
• Add release documentation for v8.0.0

8.0.0 / 2019-12-22

The major release is caused by removing old mistakes and upgrading dependencies that themselves have had new major releases.

• Upgrade nise, @sinonjs/formatio, @sinonjs/samsam and @sinonjs/referee
• Update lolex and nise to get new async timer methods (see https://github.com/sinonjs/lolex/blob/master/CHANGELOG.md)
• Remove sinon.spyCall
• Remove sinon.sandbox.create
• Remove obsolete deprecated.printWarning stubbing from test

Commits

• cb8f3b7 8.1.0
• 3c6fd39 Update CHANGELOG.md and AUTHORS for new release
• cd27e25 Update @sinonjs/samsam to latest
• 7c79e80 Merge pull request #2199 from RealZogger/getCall-negative
• d851a5e Add clarifying comment for negative indices
• 6d59744 Support negative indices in getCall
• 2369139 Update docs/changelog.md and set new release id in docs/_config.yml
• 1d486d2 Add release documentation for v8.0.4
• a366e7b 8.0.4
• 97c6a96 Update CHANGELOG.md and AUTHORS for new release
• Additional commits viewable in compare view

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[dependabot-preview[bot]]

Superseded by #411.