[Bug] Please update PricingV1PhoneNumberPhoneNumberCountryInstancePhoneNumberPrices to reflect the correct names

[cosileone]

When using the Twilio pricing api the response returns snake_case properties.

{
  "url": "https://pricing.twilio.com/v1/PhoneNumbers/Countries/US",
  "country": "United States",
  "price_unit": "USD",
  "phone_number_prices": [
    {
      "number_type": "local",
      "base_price": "1.15",
      "current_price": "1.15"
    },
    {
      "number_type": "toll free",
      "base_price": "2.15",
      "current_price": "2.15"
    }
  ],
  "iso_country": "US"
}

However when using the Twilio Node SDK (v1) endpoint as such

const response = await ctx.twilio.pricing.v1.phoneNumbers
        .countries("US")
        .fetch((err, result) => result?.toJSON())

A mixed casing response is received, properties as shown below.

{
  country: 'United States',
  isoCountry: 'US',
  phoneNumberPrices: [
    { number_type: 'local', base_price: '1.15', current_price: '1.15' },
    {
      number_type: 'toll free',
      base_price: '2.15',
      current_price: '2.15'
    }
  ],
  priceUnit: 'USD',
  url: 'https://pricing.twilio.com/v1/PhoneNumbers/Countries/US'
}

Notice how number_type is snake_case whereas phoneNumberPrices is camelCase, this is incorrect as the SDK expects camelCase property names as shown below.

twilio-node/src/rest/pricing/v1/phoneNumber/country.ts

Lines 23 to 27 in a23ee16

	export class PricingV1PhoneNumberPhoneNumberCountryInstancePhoneNumberPrices {
	"basePrice"?: number;
	"currentPrice"?: number;
	"numberType"?: string;
	}

Please either update to correctly camelCase all property names, or update PricingV1PhoneNumberPhoneNumberCountryInstancePhoneNumberPrices to correctly reflect the snake_case response to allow for correct property access in Typescript.

e.g.
response.phoneNumberPrices[0].numberType <-- this is currently not possible with the current typings