Fix migrations

server/users/migrations/0021_license_isbn.py

@@ -5,7 +5,7 @@ from django.db import migrations, models
 class Migration(migrations.Migration):
 
     dependencies = [
-        ('users', '0019_userdata'),
+        ('users', '0020_user_recent_modules'),
     ]
 
     operations = [

server/users/migrations/0022_auto_20200701_1342.py

@@ -21,7 +21,7 @@ def add_isbn_to_license(apps, schema_editor):
 class Migration(migrations.Migration):
 
     dependencies = [
-        ('users', '0020_license_isbn'),
+        ('users', '0021_license_isbn'),
     ]
 
     operations = [