Make tryParse<DateTime> return a UTC DateTime

Author: gusty

src/FSharpPlus/Control/Converter.fs

@@ -116,7 +116,7 @@ type TryParse =
         match DateTime.TryParseExact (x, [|"yyyy-MM-ddTHH:mm:ss.fffZ"; "yyyy-MM-ddTHH:mm:ssZ"|], null, DateTimeStyles.RoundtripKind) with
         | true, x -> Some x
         | _ ->
-            match DateTime.TryParse (x, CultureInfo.InvariantCulture, DateTimeStyles.None) with
+            match DateTime.TryParse (x, CultureInfo.InvariantCulture, DateTimeStyles.AdjustToUniversal) with
             | true, x -> Some x
             | _ -> None