Fixes Prototype Pollution vulnerability in Handlebars dependency

[tonycassara]

Summary

jest-cli is affected by a vulnerability published today on NPM: https://www.npmjs.com/advisories/755

This updates the offending package istanbul-api and subsequently istanbul-reports to the version needed to no longer have the handlebars vulnerability.

Test plan

I used yarn upgrade istantbul-api@2.1.1 in the directory jest/packages/jest-cli

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[SimenB]

Thanks @tonycassara!

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Note that since the new version is in semver range, you don't need to wait for Jest to publish a new version to avoid the vulnerable dependency - just upgrade locally and make sure it's in your lockfile

[tonycassara]

Cool thanks @SimenB ! Will make those changes locally.

[SimenB]

npm upgrade handlebars --depth Infinity or yarn upgrade handlebars should do it 🙂

[tonycassara]

That worked perfectly thank you

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