Update @types/jest to the latest version 🚀

[greenkeeper]

Version 20.0.0 of @types/jest just got published.

Dependency	@types/jest
Current Version	19.2.4
Type	devDependency

The version 20.0.0 is not covered by your current version range.

Without accepting this pull request your project will work just like it did before. There might be a bunch of new features, fixes and perf improvements that the maintainers worked on for you though.

I recommend you look into these changes and try to get onto the latest version of @types/jest.
Given that you have a decent test suite, a passing build is a strong indicator that you can take advantage of these changes by merging the proposed change into your project. Otherwise this branch is a great starting point for you to work on the update.

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Not sure how things should work exactly?

There is a collection of frequently asked questions and of course you may always ask my humans.

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Your Greenkeeper Bot 🌴

[DangerCI]

	Warnings
⚠️	Please add a changelog entry for your changes.
⚠️	Please add your GitHub name to the changelog entry, so we can attribute you correctly.
⚠️	Changes were made to package.json, but not to yarn.lock. Perhaps you need to run yarn install?

Generated by 🚫 dangerJS

[greenkeeper]

Version 20.0.1 just got published.

Update to this version instead 🚀