Update dependency @testing-library/react to v9.3.0

[renovate[bot]]

This PR contains the following updates:

Package	Type	Update	Change
@testing-library/react	devDependencies	minor	9.2.0 -> 9.3.0

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Release Notes

testing-library/react-testing-library

### [`v9.3.0`](https://togithub.com/testing-library/react-testing-library/releases/v9.3.0) [Compare Source](https://togithub.com/testing-library/react-testing-library/compare/v9.2.0...v9.3.0) ##### Features - **debug:** allow debugging an array of containers ([#​495](https://togithub.com/testing-library/react-testing-library/issues/495)) ([f2805d4](https://togithub.com/testing-library/react-testing-library/commit/f2805d4))

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[tiftran]

bors r+

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