OpenAPI Update (#1616)

Update OpenAPI for 7a56155abe41349d3f1814e1a57ce6fde828e7e9

Co-authored-by: Stripe OpenAPI <105521251+stripe-openapi[bot]@users.noreply.github.com>

Author: stripe-openapi[bot]

embedded/openapi/spec3.beta.sdk.json

@@ -46206,20 +46206,27 @@
             "maxLength": 255,
             "nullable": true,
             "type": "string"
+          },
+          "subscription_reference": {
+            "maxLength": 2048,
+            "nullable": true,
+            "type": "string"
           }
         },
         "required": [
           "image_url",
           "product_url",
-          "reference"
+          "reference",
+          "subscription_reference"
         ],
         "title": "PaymentFlowsPrivatePaymentMethodsKlarnaPaymentIntentAmountDetailsLineItemPaymentMethodOptions",
         "type": "object",
         "x-expandableFields": [],
         "x-stripeMostCommon": [
           "image_url",
           "product_url",
-          "reference"
+          "reference",
+          "subscription_reference"
         ]
       },
       "payment_flows_private_payment_methods_naver_pay_payment_method_options": {