feat: remove `RuleTester` in `/utils` in favour of the new `/rule-tester` package#6816

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bradzacher merged 5 commits intov6from

v6-migrate-rule-tester

Apr 28, 2023

Commits on Apr 28, 2023

Update packages/website/blog/2023-03-13-announcing-typescript-eslint-v6-beta.md

bradzacher
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JoshuaKGoldberg
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