Update dependency @testing-library/jest-dom to v6.4.6

[renovate[bot]]

This PR contains the following updates:

Package	Change	Age	Adoption	Passing	Confidence
@testing-library/jest-dom	6.4.5 -> 6.4.6

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Release Notes

testing-library/jest-dom (@​testing-library/jest-dom)

### [`v6.4.6`](https://togithub.com/testing-library/jest-dom/releases/tag/v6.4.6) [Compare Source](https://togithub.com/testing-library/jest-dom/compare/v6.4.5...v6.4.6) ##### Bug Fixes - Support [@​starting-style](https://togithub.com/starting-style) ([#​602](https://togithub.com/testing-library/jest-dom/issues/602)) ([fd9ee68](https://togithub.com/testing-library/jest-dom/commit/fd9ee68ae4ca93c47f0781ad23113d45118b8476))

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