Update dependency @testing-library/jest-dom to v6.4.8

[renovate[bot]]

This PR contains the following updates:

Package	Change	Age	Adoption	Passing	Confidence
@testing-library/jest-dom	6.4.6 -> 6.4.8

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Release Notes

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

### [`v6.4.8`](https://togithub.com/testing-library/jest-dom/compare/v6.4.7...d02e80b1b7ed38090975bdfe49ab8063eec040f5) [Compare Source](https://togithub.com/testing-library/jest-dom/compare/v6.4.7...v6.4.8) ### [`v6.4.7`](https://togithub.com/testing-library/jest-dom/compare/v6.4.6...5cc6298847e08872b79f827921c64c9ba261cc54) [Compare Source](https://togithub.com/testing-library/jest-dom/compare/v6.4.6...v6.4.7)

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