Remove more newlines

Author: Per Kops

src/Atc.Rest.Client/Serialization/DefaultJsonContractSerializer.cs

@@ -39,4 +39,4 @@ public string Serialize(object value)
         public object? Deserialize(byte[] utf8Json, Type returnType)
             => JsonSerializer.Deserialize(utf8Json, returnType, options);
     }
-}
+}

src/Atc.Rest.Client/Serialization/JsonSerializerOptionsExtensions.cs

@@ -39,4 +39,4 @@ public static JsonSerializerOptions WithoutConverter(
             return result;
         }
     }
-}
+}