Migrate from AutoField to BigAutoField (#3493)

src/pretix/helpers/migrations/0004_bigint.py

@@ -0,0 +1,19 @@
+# Generated by Django 4.2.4 on 2023-09-26 12:01
+
+from django.db import migrations, models
+
+
+class Migration(migrations.Migration):
+    dependencies = [
+        ("pretixhelpers", "0003_thumbnail_created"),
+    ]
+
+    operations = [
+        migrations.AlterField(
+            model_name="thumbnail",
+            name="id",
+            field=models.BigAutoField(
+                auto_created=True, primary_key=True, serialize=False
+            ),
+        ),
+    ]