Reorder usings

Author: MiraGeowerkstatt

src/api/Models/Codelist.cs

@@ -1,8 +1,8 @@
 using Microsoft.EntityFrameworkCore;
 using System.ComponentModel.DataAnnotations;
 using System.ComponentModel.DataAnnotations.Schema;
-using System.Text.Json.Serialization;
 using System.Text.Json;
+using System.Text.Json.Serialization;
 
 namespace BDMS.Models;