Fix alembic tooling (#42)

### Description
Autogenerate requires the `include_schemas=True` to work.

#### Issue
[ch65314](https://app.clubhouse.io/genepi/stories/space/65314)

### Test plan
Generated some migrations.

database_migrations/env.py

@@ -69,6 +69,7 @@ def run_migrations_offline():
         target_metadata=target_metadata,
         literal_binds=True,
         dialect_opts={"paramstyle": "named"},
+        include_schemas=True,
     )
 
     with context.begin_transaction():
@@ -85,7 +86,11 @@ def run_migrations_online():
     connectable = create_engine(get_uri())
 
     with connectable.connect() as connection:
-        context.configure(connection=connection, target_metadata=target_metadata)
+        context.configure(
+            connection=connection,
+            target_metadata=target_metadata,
+            include_schemas=True,
+        )
 
         with context.begin_transaction():
             context.run_migrations()