chore(deps): update dependency sinon to v6

[renovate]

This Pull Request updates dependency sinon from v5.1.1 to v6.0.1

Note: This PR was created on a configured schedule ("after 10pm,before 5am") and will not receive updates outside those times.

Release Notes

v6.0.1

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• Add fake behaviors to sandbox (#​1815)

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v6.0.0

Compare Source

• Export Sinon and its functions as an EcmaScript module (#​1809 and #​1835)
• Document/test call ordering checks

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This PR has been generated by Renovate Bot.

[codecov]

Codecov Report

Merging #60 into master will not change coverage.
The diff coverage is n/a.

@@          Coverage Diff          @@
##           master    #60   +/-   ##
=====================================
  Coverage     100%   100%           
=====================================
  Files           4      4           
  Lines         264    264           
=====================================
  Hits          264    264

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