Update @types/sinon to the latest version 🚀

[greenkeeper]

Version 5.0.0 of @types/sinon was just published.

Dependency	@types/sinon
Current Version	4.3.3
Type	devDependency

The version 5.0.0 is not covered by your current version range.

If you don’t accept this pull request, your project will work just like it did before. However, you might be missing out on a bunch of new features, fixes and/or performance improvements from the dependency update.

It might be worth looking into these changes and trying to get this project onto the latest version of @types/sinon.

If you have a solid test suite and good coverage, a passing build is a strong indicator that you can take advantage of these changes directly by merging the proposed change into your project. If the build fails or you don’t have such unconditional trust in your tests, this branch is a great starting point for you to work on the update.

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[codecov]

Codecov Report

Merging #213 into master will not change coverage.
The diff coverage is n/a.

@@           Coverage Diff           @@
##           master     #213   +/-   ##
=======================================
  Coverage   90.02%   90.02%           
=======================================
  Files           6        6           
  Lines         391      391           
  Branches       65       65           
=======================================
  Hits          352      352           
  Misses         39       39

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