Update typescript-eslint monorepo to v4.9.1

[renovate]

This PR contains the following updates:

Package	Change	Age	Adoption	Passing	Confidence
@typescript-eslint/eslint-plugin	4.9.0 -> 4.9.1
@typescript-eslint/parser	4.9.0 -> 4.9.1

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Release Notes

typescript-eslint/typescript-eslint

v4.9.1

Compare Source

Bug Fixes

• eslint-plugin: [method-signature-style] fix crash with methods without a return type (#​2836) (fed89f2), closes #​2834
• eslint-plugin: [no-unused-vars] false-positive with class expressions (#​2833) (aadb39f), closes #​2831
• eslint-plugin: [no-unused-vars] fix race condition between naming-convention and no-unused-vars (#​2848) (ccb6b94), closes #​2844

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