Swap to better method of validating uniqueness of cable types

SCOPE, Arona, damn it

assets/migrations/0022_alter_cabletype_unique_together.py

@@ -0,0 +1,17 @@
+# Generated by Django 3.2.11 on 2022-01-12 19:11
+
+from django.db import migrations
+
+
+class Migration(migrations.Migration):
+
+    dependencies = [
+        ('assets', '0021_auto_20210302_1204'),
+    ]
+
+    operations = [
+        migrations.AlterUniqueTogether(
+            name='cabletype',
+            unique_together={('plug', 'socket', 'circuits', 'cores')},
+        ),
+    ]