Installing pg_stat_monitor on AWS RDS databases

I am trying to install pg_stat_monitor on AWS RDS Databases but it seems that, its not allowed since AWS RDS is managed service by AWS however, there is parameter group option from which I can edit the configuration at Database level and have tried modifying the shared_preload_libraries to allow pg_stat_monitor but it seems AWS does not have this in allowed list. I wonder if is there an alternative using which I can install pg_stat_monitor on AWS RDS Postgres DB.

Thank You