Fix courses migration graph for deploy

Author: alexeygrigorev

courses/migrations/0028_leaderboardcomplaint.py

@@ -8,7 +8,7 @@
 class Migration(migrations.Migration):
 
     dependencies = [
-        ('courses', '0027_homework_instructions_url_project_instructions_url_and_more'),
+        ('courses', '0026_enrollment_disable_learning_in_public_and_more'),
         migrations.swappable_dependency(settings.AUTH_USER_MODEL),
     ]
 

courses/migrations/0031_merge_instruction_urls_and_profile_fields.py

@@ -0,0 +1,10 @@
+from django.db import migrations
+
+
+class Migration(migrations.Migration):
+    dependencies = [
+        ("courses", "0027_homework_instructions_url_project_instructions_url_and_more"),
+        ("courses", "0030_remove_enrollment_profile_fields"),
+    ]
+
+    operations = []