Convert Octal-Mode to Decimal (#3041)

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

Ryujinx.Common/ReleaseInformations.cs

@@ -1,4 +1,6 @@
-namespace Ryujinx.Common
+using System.Reflection;
+
+namespace Ryujinx.Common
 {
     // DO NOT EDIT, filled by CI
     public static class ReleaseInformations
@@ -25,7 +27,7 @@
             }
             else
             {
-                return "1.0.0-dirty";
+                return Assembly.GetEntryAssembly().GetCustomAttribute<AssemblyInformationalVersionAttribute>().InformationalVersion;
             }
         }
     }

Ryujinx/Modules/Updater/Updater.cs

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