OpenAPI Update (#694)

Update OpenAPI for da16342682a7e5396ab4e8f859dee64c1493bf89

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

Author: stripe-openapi[bot]

embedded/openapi/spec3.beta.sdk.json

@@ -49662,7 +49662,8 @@
               "timestamp",
               "upcoming_invoice"
             ],
-            "type": "string"
+            "type": "string",
+            "x-stripeBypassValidation": true
           }
         },
         "required": [
@@ -154977,7 +154978,8 @@
                                 "timestamp",
                                 "upcoming_invoice"
                               ],
-                              "type": "string"
+                              "type": "string",
+                              "x-stripeBypassValidation": true
                             }
                           },
                           "required": [
@@ -157133,7 +157135,8 @@
                                 "timestamp",
                                 "upcoming_invoice"
                               ],
-                              "type": "string"
+                              "type": "string",
+                              "x-stripeBypassValidation": true
                             }
                           },
                           "required": [