add migration

cal/migrations/0003_alter_event_advertise.py

@@ -0,0 +1,18 @@
+# Generated by Django 3.2.20 on 2024-02-24 15:30
+
+from django.db import migrations, models
+
+
+class Migration(migrations.Migration):
+
+    dependencies = [
+        ('cal', '0002_event_advertise'),
+    ]
+
+    operations = [
+        migrations.AlterField(
+            model_name='event',
+            name='advertise',
+            field=models.BooleanField(default=True),
+        ),
+    ]