Extend WebHook URL to 255 chars (was: 200)

src/pretix/api/migrations/0006_alter_webhook_target_url.py

@@ -0,0 +1,18 @@
+# Generated by Django 3.2.2 on 2021-07-05 07:56
+
+from django.db import migrations, models
+
+
+class Migration(migrations.Migration):
+
+    dependencies = [
+        ('pretixapi', '0005_auto_20191028_1541'),
+    ]
+
+    operations = [
+        migrations.AlterField(
+            model_name='webhook',
+            name='target_url',
+            field=models.URLField(max_length=255),
+        ),
+    ]