add session expiration fields to auth method form and model

gatekeeper/migrations/0010_alter_gatekeeperuser_email.py

@@ -0,0 +1,18 @@
+# Generated by Django 5.2.12 on 2026-03-15 22:38
+
+from django.db import migrations, models
+
+
+class Migration(migrations.Migration):
+
+    dependencies = [
+        ('gatekeeper', '0009_alter_authmethod_session_expiration_minutes'),
+    ]
+
+    operations = [
+        migrations.AlterField(
+            model_name='gatekeeperuser',
+            name='email',
+            field=models.EmailField(blank=True, max_length=254),
+        ),
+    ]