Support for profile pictures in External Contacts APIs

Enhancements

• New profile_picture_download_url response field in the following External Contacts APIs:
  • GET /v2/phone/external_contacts
  • GET /v2/accounts/{accountId}/phone/external_contacts
  • GET /v2/accounts/{accountId}/phone/external_contacts/{externalContactId}
  • GET /v2/phone/external_contacts/{externalContactId}
• New profile_picture request field in the following External Contacts APIs:
  • POST /v2/phone/external_contacts
  • POST /v2/accounts/{accountId}/phone/external_contacts
  • PATCH /v2/accounts/{accountId}/phone/external_contacts/{externalContactId}
  • PATCH /v2/phone/external_contacts/{externalContactId}