fix(deps): update typescript-eslint monorepo to v8.20.0

##### [v8.20.0](https://github.com/typescript-eslint/typescript-eslint/blob/HEAD/packages/eslint-plugin/CHANGELOG.md#8200-2025-01-13)

##### 🚀 Features

-   **eslint-plugin:** \[consistent-type-assertions] add arrayLiteralTypeAssertions options ([#10565](typescript-eslint/typescript-eslint#10565))
-   **eslint-plugin:** \[no-deprecated] add allow options ([#10585](typescript-eslint/typescript-eslint#10585))
-   **eslint-plugin:** \[no-misused-spread] add new rule ([#10551](typescript-eslint/typescript-eslint#10551))

##### 🩹 Fixes

-   **eslint-plugin:** \[no-unnecessary-condition] don't flag optional chaining for union types with an unconstrained type parameters ([#10602](typescript-eslint/typescript-eslint#10602))
-   **eslint-plugin:** \[no-shadow] ignore ordering of type declarations ([#10593](typescript-eslint/typescript-eslint#10593))

##### ❤️ Thank You

-   Josh Goldberg ✨
-   Ronen Amiel
-   YeonJuan [@yeonjuan](https://github.com/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.