Fix incorrect logged value (#410)

Fix "System.Text.Json.JsonDocument" being logged instead of the actual JSON.

Author: martincostello

src/AspNet.Security.OAuth.Apple/AppleAuthenticationHandler.cs

@@ -90,7 +90,7 @@ protected override async Task<AuthenticationTicket> CreateTicketAsync(
                 Logger.LogTrace("Refresh Token: {RefreshToken}", tokens.RefreshToken);
                 Logger.LogTrace("Token Type: {TokenType}", tokens.TokenType);
                 Logger.LogTrace("Expires In: {ExpiresIn}", tokens.ExpiresIn);
-                Logger.LogTrace("Response: {TokenResponse}", tokens.Response);
+                Logger.LogTrace("Response: {TokenResponse}", tokens.Response.RootElement);
                 Logger.LogTrace("ID Token: {IdToken}", idToken);
             }