fix auto values for inserted field

cntmanage/flightslot/migrations/0034_alter_weekpreference_inserted.py

@@ -0,0 +1,18 @@
+# Generated by Django 5.2.8 on 2025-12-10 11:20
+
+from django.db import migrations, models
+
+
+class Migration(migrations.Migration):
+
+    dependencies = [
+        ('flightslot', '0033_alter_weekpreference_inserted'),
+    ]
+
+    operations = [
+        migrations.AlterField(
+            model_name='weekpreference',
+            name='inserted',
+            field=models.DateTimeField(auto_now_add=True),
+        ),
+    ]