Added missing migration file (how did it escape?)

InvenTree/users/migrations/0005_owner_model.py

@@ -0,0 +1,27 @@
+# Generated by Django 3.0.7 on 2021-01-11 18:54
+
+from django.db import migrations, models
+import django.db.models.deletion
+
+
+class Migration(migrations.Migration):
+
+    dependencies = [
+        ('contenttypes', '0002_remove_content_type_name'),
+        ('users', '0004_auto_20210113_1909'),
+    ]
+
+    operations = [
+        migrations.CreateModel(
+            name='Owner',
+            fields=[
+                ('id', models.AutoField(auto_created=True, primary_key=True, serialize=False, verbose_name='ID')),
+                ('owner_id', models.PositiveIntegerField(blank=True, null=True)),
+                ('owner_type', models.ForeignKey(blank=True, null=True, on_delete=django.db.models.deletion.CASCADE, to='contenttypes.ContentType')),
+            ],
+        ),
+        migrations.AddConstraint(
+            model_name='owner',
+            constraint=models.UniqueConstraint(fields=('owner_type', 'owner_id'), name='unique_owner'),
+        ),
+    ]