chore(deps): update typescript-eslint monorepo to v4.8.1

[renovate[bot]]

This PR contains the following updates:

Package	Type	Update	Change
@typescript-eslint/eslint-plugin	devDependencies	patch	4.8.0 -> 4.8.1
@typescript-eslint/parser	devDependencies	patch	4.8.0 -> 4.8.1

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Release Notes

typescript-eslint/typescript-eslint

### [`v4.8.1`](https://togithub.com/typescript-eslint/typescript-eslint/blob/master/CHANGELOG.md#​481-httpsgithubcomtypescript-eslinttypescript-eslintcomparev480v481-2020-11-17) [Compare Source](https://togithub.com/typescript-eslint/typescript-eslint/compare/v4.8.0...v4.8.1) ##### Bug Fixes - **eslint-plugin:** [no-unnecessary-condition] false positive when array predicate returns unknown ([#​2772](https://togithub.com/typescript-eslint/typescript-eslint/issues/2772)) ([111c244](https://togithub.com/typescript-eslint/typescript-eslint/commit/111c244c3eb157efeb5c43ff39f12633b27f091e)) - **typescript-estree:** parseWithNodeMaps returning empty maps ([#​2773](https://togithub.com/typescript-eslint/typescript-eslint/issues/2773)) ([3e4a0ed](https://togithub.com/typescript-eslint/typescript-eslint/commit/3e4a0ed0d615fd22a2f28c7c8af6179673e195f8))

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