Update dependency @typescript-eslint/eslint-plugin to v6.21.0

[renovate[bot]]

This PR contains the following updates:

Package	Change	Age	Adoption	Passing	Confidence
@typescript-eslint/eslint-plugin (source)	6.20.0 -> 6.21.0

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Release Notes

typescript-eslint/typescript-eslint (@​typescript-eslint/eslint-plugin)

### [`v6.21.0`](https://togithub.com/typescript-eslint/typescript-eslint/blob/HEAD/packages/eslint-plugin/CHANGELOG.md#6210-2024-02-05) [Compare Source](https://togithub.com/typescript-eslint/typescript-eslint/compare/v6.20.0...v6.21.0) ##### 🚀 Features - export plugin metadata - allow `parserOptions.project: false` - **eslint-plugin:** add rule prefer-find ##### 🩹 Fixes - **eslint-plugin:** \[no-unused-vars] don't report on types referenced in export assignment expression - **eslint-plugin:** \[switch-exhaustiveness-check] better support for intersections, infinite types, non-union values - **eslint-plugin:** \[consistent-type-imports] dont report on types used in export assignment expressions - **eslint-plugin:** \[no-unnecessary-condition] handle left-hand optional with exactOptionalPropertyTypes option - **eslint-plugin:** \[class-literal-property-style] allow getter when same key setter exists - **eslint-plugin:** \[no-unnecessary-type-assertion] provide valid fixes for assertions with extra tokens before `as` keyword ##### ❤️ Thank You - auvred - Brad Zacher - Kirk Waiblinger - Pete Gonzalez - YeonJuan You can read about our [versioning strategy](https://main--typescript-eslint.netlify.app/users/versioning) and [releases](https://main--typescript-eslint.netlify.app/users/releases) on our website.

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