another small fix

migrations/migrations_v3.sql

@@ -8,7 +8,7 @@ CREATE TABLE IF NOT EXISTS cpr_preregistration (
     email TEXT NOT NULL,
     product_type TEXT NOT NULL,
     internal_control_number TEXT NOT NULL,
-    product_quantity INTEGER NOT NULL,
+    product_quantity TEXT NOT NULL,
     property_name TEXT NOT NULL,
     property_location TEXT NOT NULL,
     created_at DATETIME DEFAULT CURRENT_TIMESTAMP