fix missing import

Author: Mwindo

spiffworkflow-backend/migrations/versions/8b258f77eafe_.py

@@ -9,6 +9,7 @@
 from alembic import op
 import sqlalchemy as sa
 from sqlalchemy.dialects import mysql
+from sqlalchemy import text
 
 # revision identifiers, used by Alembic.
 revision = "8b258f77eafe"