Upsert a customer

curl --location --request POST 'https://api.sandbox.neofin.services/customer/' \
--header 'api-key;' \
--header 'secret-key;' \
--header 'Content-Type: application/json' \
--data-raw '{
    "customers": [
        {
            "address_city": "Anápolis",
            "address_complement": "ALALA QUADRA13",
            "address_neighborhood": "DAIA",
            "address_number": "SN",
            "address_state": "GO",
            "address_street": "Rua teste",
            "address_zip_code": null,
            "document": "30234820000109",
            "mail": "empresa@embalagens.com.br",
            "name": "Nome do meu cliente",
            "phone": "(33) 3333-3333",
            "secondary_phone": "",
            "integration_identifier": "33322111aaabbccc",
            "pause_notifications": false,
            "recipients": [
                "empresa-1@embalagens.com.br",
                "empresa-2@embalagens.com.br"
            ]
        }
    ]
}'