[@typescript-eslint/quotes] False positive in Typescript Interface

Repro

{
  "rules": {
    "quotes": "off",
    "@typescript-eslint/quotes": ["error", "backtick"],
  }
}

export interface CardAttributes {
  id: number;
  name: string;
  creator: string;
  description: string;
  'is-joined': boolean;
  'is-joining': boolean;
  'is-approval-required': boolean;
}

Expected Result
No Errors

Actual Result
6:3 error Strings must use backtick @typescript-eslint/quotes
7:3 error Strings must use backtick @typescript-eslint/quotes
8:3 error Strings must use backtick @typescript-eslint/quotes

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