removed using declaration

com.unity.perception/Runtime/Randomization/Scenarios/ScenarioBase.cs

         public void SerializeToFile()
         {
             Directory.CreateDirectory(Application.dataPath + "/StreamingAssets/");
-            using var writer = new StreamWriter(defaultConfigFilePath, false);
-            writer.Write(SerializeToJson());
+            using (var writer = new StreamWriter(defaultConfigFilePath, false))
+            {
+                writer.Write(SerializeToJson());
+            }
         }
 
         /// <summary>