Fix change-case/keys types

[marcingajda]

I fixed the TypeScript for change-case-keys, so it allows to pass options.

Instead of this

export declare const camelCase: (object: unknown, depth?: number) => unknown;
export declare const capitalCase: (object: unknown, depth?: number) => unknown;
...

it produces now this:

export declare const camelCase: (object: unknown, depth?: number, options?: changeCase.PascalCaseOptions | undefined) => unknown;
export declare const capitalCase: (object: unknown, depth?: number, options?: changeCase.Options | undefined) => unknown;
...

[blakeembrey]

Thanks for the catch!