Update dependency @testing-library/react to v11.2.3

[renovate[bot]]

This PR contains the following updates:

Package	Change	Age	Adoption	Passing	Confidence
@testing-library/react	11.2.2 -> 11.2.3

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Release Notes

testing-library/react-testing-library

### [`v11.2.3`](https://togithub.com/testing-library/react-testing-library/releases/v11.2.3) [Compare Source](https://togithub.com/testing-library/react-testing-library/compare/v11.2.2...v11.2.3) ##### Bug Fixes - Return type of unmount is `void` ([#​857](https://togithub.com/testing-library/react-testing-library/issues/857)) ([1389f09](https://togithub.com/testing-library/react-testing-library/commit/1389f094748991b3a900e2fcc9f4bf21df212da9))

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