docs: generate OAS manually for 2.7.0 (#12158)

* original changes

* changes

* fixes for delete operations

* generate oas

www/apps/api-reference/specs/admin/components/schemas/OrderLineItem.yaml

@@ -6,6 +6,7 @@ required:
   - title
   - requires_shipping
   - is_discountable
+  - is_giftcard
   - is_tax_inclusive
   - unit_price
   - quantity
@@ -198,3 +199,7 @@ properties:
     type: string
     title: product_type_id
     description: The ID of the associated product's type.
+  is_giftcard:
+    type: boolean
+    title: is_giftcard
+    description: Whether the item is a gift card.