Update a voucher

curl -X PUT "https://api.live.paisr.tech/v2/vouchers/{voucher_id}" \
  -H "Authorization: Bearer <access_token>" \
  -H "User-Agent: MyApp/1.0" \
  -H "Content-Type: application/json" \
  -d '{
  "description": "Discount voucher for loyal customers.",
  "amount": 10,
  "max_redeems": 100,
  "expires": "In 3 days"
}'

{
  "success": true,
  "message": "Request was successful."
}