chore: use indexes instead of index_together in models

index_together is deprecated and will be removed in django future

dalec/models.py

@@ -110,4 +110,4 @@ class Meta:
         ordering = ("-last_update_dt",)
         get_latest_by = "last_update_dt"
         abstract = True
-        index_together = (("app", "content_type", "channel", "channel_object"),)
+        indexes = [models.Index(fields=["app", "content_type", "channel", "channel_object"])]

dalec_prime/migrations/0005_auto_20231017_1208.py

@@ -0,0 +1,23 @@
+# Generated by Django 3.2.21 on 2023-10-17 10:08
+
+from django.db import migrations, models
+
+
+class Migration(migrations.Migration):
+    dependencies = [
+        ("dalec_prime", "0004_alter_content_id_alter_fetchhistory_id"),
+    ]
+
+    operations = [
+        migrations.AlterIndexTogether(
+            name="content",
+            index_together=set(),
+        ),
+        migrations.AddIndex(
+            model_name="content",
+            index=models.Index(
+                fields=["app", "content_type", "channel", "channel_object"],
+                name="dalec_prime_app_636e7d_idx",
+            ),
+        ),
+    ]