Json serialization exception using the new cursor iterator

[bmoyer240]

The iterator is failing when deserializing the next page of results regardless of the page size.

var cursor = await _zendeskClient.Users.GetAllAsync(new CursorPager(), cancellationToken);
var iterator = _iteratorFactory.Create<UserResponse>(cursor);

while (iterator.HasMore())
{
    await iterator.NextPage();

    foreach (var user in iterator)
    {
        _logger.LogDebug("User: {Name}", user.Name);

    }
}

[fbvilela]

#329

[andrewdeans]

Any chance we can get #329 merged and an updated nuget package released?