How to enable ldap authentication in aws managed elasticsearch service?

Hi,
We are doing a POC for enabling ldap auth in our AWS managed elasticsearch domain. To start with that, we know the ldap settings should be added to plugins/opendistro_security/securityconfig/config.yml file. But how do we access this file in aws? As this service is entirely managed by aws and we dont have any control over it. Kindly suggest.
Thanks