Convert Octal-Mode to Decimal (#3041)

Apparently C# doesn't use 0 as a prefix like C does.

Ryujinx/Modules/Updater/Updater.cs

@@ -396,7 +396,7 @@ namespace Ryujinx.Modules
 
             if (!OperatingSystem.IsWindows())
             {
-                chmod(ryuBin, 0777);
+                chmod(ryuBin, 493);
             }
         }