Add missing migration file

InvenTree/order/migrations/0039_auto_20201112_2203.py

@@ -0,0 +1,19 @@
+# Generated by Django 3.0.7 on 2020-11-12 11:03
+
+from django.db import migrations
+import djmoney.models.fields
+
+
+class Migration(migrations.Migration):
+
+    dependencies = [
+        ('order', '0038_auto_20201112_1737'),
+    ]
+
+    operations = [
+        migrations.AlterField(
+            model_name='purchaseorderlineitem',
+            name='purchase_price',
+            field=djmoney.models.fields.MoneyField(blank=True, decimal_places=4, default_currency='USD', help_text='Unit purchase price', max_digits=19, null=True, verbose_name='Purchase Price'),
+        ),
+    ]