Send consumption information serialization is missing `deliveryStatus` field.

[ohadbenita]

The send_consumption_information method fails to serializae the deliveryStatus field, for example:

api_client.send_consumption_information(
    transaction_id="some-transaction-id",
    consumption_request=ConsumptionRequest(
        customerConsented=True,
        sampleContentProvided=True,
        deliveryStatus=DeliveryStatus.DELIVERED,
        consumptionPercentage=0,
        refundPreference=RefundPreference.DECLINE,
    )
)

results in JSON:

{'consumptionPercentage': 0, 'customerConsented': True, 'refundPreference': 'DECLINE', 'sampleContentProvided': True}

See line 681 in api_client.py.
This should be fixed ASAP as this breaks this method's functionality completely.