add 37 to UUID for cancelaciones to EDICOM add 'C' last char to know it's cancel

Clientes/migrations/0016_alter_timbres_uuid.py

@@ -0,0 +1,18 @@
+# Generated by Django 4.1.3 on 2023-03-09 17:35
+
+from django.db import migrations, models
+
+
+class Migration(migrations.Migration):
+
+    dependencies = [
+        ('Clientes', '0015_alter_timbres_rfcc'),
+    ]
+
+    operations = [
+        migrations.AlterField(
+            model_name='timbres',
+            name='uuid',
+            field=models.CharField(max_length=37, unique=True),
+        ),
+    ]