fix(http-json-body-parser): parameter typings

[GentileFulvio]

An attemp to fix the following bug #1116 .
This is my first time submitting a PR in this repo so let me know if I interpreted anything wrong

[willfarrell]

Thanks for putting the PR together. I think this change has already been made in our v5 branch (see below). Does this meet your needs? We're just waiting on AWS to release the nodejs-20 runtime before releasing it. There is an alpha you can get now though.

import middy from '@middy/core'
import { APIGatewayEvent, APIGatewayProxyEventV2 } from 'aws-lambda'
import { JsonValue } from 'type-fest'

interface Options {
  reviver?: (key: string, value: any) => any
  disableContentTypeError?: boolean
}

type VersionedApiGatewayEvent = APIGatewayEvent | APIGatewayProxyEventV2

export type Event<APIGatewayEventType extends VersionedApiGatewayEvent = VersionedApiGatewayEvent> = Omit<APIGatewayEventType, 'body'> & {
  /**
   * The body of the HTTP request.
   */
  body: JsonValue
}

declare function jsonBodyParser<APIGatewayEventType extends VersionedApiGatewayEvent = VersionedApiGatewayEvent> (options?: Options): middy.MiddlewareObj<Event<APIGatewayEventType>>

export default jsonBodyParser

[willfarrell]

Close because I believe this has already been done in v5. Please re-open if you think I'm mistaken.