dnscms: bump python to 3.14, bump deps, notably wagtail to 7.2

dnscms/images/migrations/0005_customimage_description.py

@@ -0,0 +1,18 @@
+# Generated by Django 5.2.5 on 2025-08-12 21:00
+
+from django.db import migrations, models
+
+
+class Migration(migrations.Migration):
+
+    dependencies = [
+        ('images', '0004_alter_customimage_alt_alter_customimage_attribution'),
+    ]
+
+    operations = [
+        migrations.AddField(
+            model_name='customimage',
+            name='description',
+            field=models.CharField(blank=True, default='', max_length=255, verbose_name='description'),
+        ),
+    ]