Fix for int64 deserialisation error in ReportedFinancials (#119)

When calling StockFundamentals.ReportedFinancialsAsync for AAPL getting an error converting the value 1709268016103.4824 into a int64

IEX response 

``` json
...
"updated":1709268016103.4824
...
```

IEXSharp/Model/CoreData/StockFundamentals/Response/ReportedFinancialResponse.cs

@@ -7,7 +7,7 @@ public class ReportedFinancialResponse
  public string key { get; set; }
  public string subkey { get; set; }
  public long date { get; set; }
- public long updated { get; set; }
+ public decimal updated { get; set; }
  public long DecreaseInUnrecognizedTaxBenefitsIsReasonablyPossible { get; set; }
  public long? formFiscalYear { get; set; }
  public string version { get; set; }
@@ -269,4 +269,4 @@ public class ReportedFinancialResponse
  public long OtherNonoperatingIncomeExpense { get; set; }
  public long ReclassificationFromAociCurrentPeriodNetOfTaxAttributableToParent { get; set; }
  }
-}
+}