Update dependency eslint-plugin-testing-library to v4.12.1

[renovate[bot]]

This PR contains the following updates:

Package	Change	Age	Adoption	Passing	Confidence
eslint-plugin-testing-library	4.12.0 -> 4.12.1

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Release Notes

testing-library/eslint-plugin-testing-library

### [`v4.12.1`](https://togithub.com/testing-library/eslint-plugin-testing-library/releases/v4.12.1) [Compare Source](https://togithub.com/testing-library/eslint-plugin-testing-library/compare/v4.12.0...v4.12.1) ##### Bug Fixes - **dependencies:** bump [@​typescript-eslint/experimental-utils](https://togithub.com/typescript-eslint/experimental-utils) ([#​461](https://togithub.com/testing-library/eslint-plugin-testing-library/issues/461)) ([fd5f057](https://togithub.com/testing-library/eslint-plugin-testing-library/commit/fd5f0576ec5a81a75e85a7bbbe870bef41285683))

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[elliotcourant]

bors r+

[bors[bot]]

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