Update dependency @testing-library/user-event to v12.8.0

[renovate[bot]]

This PR contains the following updates:

Package	Change	Age	Adoption	Passing	Confidence
@testing-library/user-event	12.7.4 -> 12.8.0

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Release Notes

testing-library/user-event

### [`v12.8.0`](https://togithub.com/testing-library/user-event/releases/v12.8.0) [Compare Source](https://togithub.com/testing-library/user-event/compare/v12.7.4...v12.8.0) ##### Features - **upload:** accept filter option ([#​562](https://togithub.com/testing-library/user-event/issues/562)) ([ede2df1](https://togithub.com/testing-library/user-event/commit/ede2df1e769fd407040edacf0cf3aa3757641968)), closes [#​558](https://togithub.com/testing-library/user-event/issues/558)

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