fix migrations

services/backend/apps/competition/migrations/0001_initial.py

@@ -1,5 +1,6 @@
-# Generated by Django 5.1.6 on 2025-03-01 08:47
+# Generated by Django 5.1.6 on 2025-03-01 10:26
 
+import datetime
 import django.db.models.deletion
 import uuid
 from django.db import migrations, models
@@ -37,6 +38,7 @@ class Migration(migrations.Migration):
             fields=[
                 ('id', models.UUIDField(default=uuid.uuid4, editable=False, primary_key=True, serialize=False)),
                 ('state', models.CharField(choices=[('not_started', 'Not Started'), ('started', 'Started'), ('finished', 'Finished')], max_length=11)),
+                ('changed_at', models.DateTimeField(default=datetime.datetime.now)),
                 ('competition', models.ForeignKey(on_delete=django.db.models.deletion.CASCADE, to='competition.competition')),
                 ('user', models.ForeignKey(on_delete=django.db.models.deletion.CASCADE, to='user.user')),
             ],

services/backend/apps/competition/migrations/0004_state_changed_at.py

@@ -1,19 +0,0 @@
-# Generated by Django 5.1.6 on 2025-03-01 08:10
-
-import datetime
-from django.db import migrations, models
-
-
-class Migration(migrations.Migration):
-
-    dependencies = [
-        ('competition', '0003_state'),
-    ]
-
-    operations = [
-        migrations.AddField(
-            model_name='state',
-            name='changed_at',
-            field=models.DateTimeField(default=datetime.datetime.now),
-        ),
-    ]