feat: [AI-207] - change the value of executed_at from integer to string (#81)

Author: mar-js

_build/api.yaml

@@ -15311,7 +15311,7 @@ components:
             type: string
           executed_at:
             nullable: true
-            type: integer
+            type: string
           expires_at:
             example: 1683053729
             format: int64

schemas/charges/charge_payment_method_bank_transfer_response.yml

@@ -15,7 +15,7 @@ payment_method_bank_transfer:
           type: string
           nullable: true
         executed_at:
-          type: integer
+          type: string
           nullable: true
         expires_at:
           type: integer