switch to shared random for GenerateCheapGuid

Kyubey/Utils.cs

@@ -16,9 +16,8 @@ public class Utils
     // This game is wonderful and working on it is even more so
     public static string GenerateCheapGuid()
     {
-        var rng = new Random();
         var bytes = new byte[8];
-        rng.NextBytes(bytes);
+        Random.Shared.NextBytes(bytes);
         return Convert.ToHexStringLower(bytes);
     }
 }