New Yahoo Finance API breaks pull

[DDoyle1066]

Good description of the issue is here

I think the change needs to happen in the downloads.jl file for the yahoo function and should look something like:

host = "query2"#rand(["query1", "query2"])
url = "https://$host.finance.yahoo.com/v8/finance/chart/$sym"
@assert res.status == 200
json_arr = JSON3.read(res.body)
full_dict = merge(json_arr.chart.result[1].indicators.quote[1],
  json_arr.chart.result[1].indicators.adjclose[1],
  Dict(:timestamp => DateTime.(json_arr.chart.result[1].timestamp)))
named_tup = NamedTuple(Dict([k=>Array(v) for (k,v) in full_dict]))

However, the timestamp is all in integers and I couldn't find a way to convert it to the DateTime that TimeArray is expecting