How to perform update on pg_index

Hi,

Regrettably disabling indexes using pg_index will not be possible as pg_index is owned by rdsadmin:

postgres=> \dt+ pg_index
                              List of relations
   Schema   |   Name   | Type  |  Owner   | Persistence | Size  | Description
------------+----------+-------+----------+-------------+-------+-------------
 pg_catalog | pg_index | table | rdsadmin | permanent   | 56 kB |
(1 row)

Users within RDS are not allowed to modify system catalogs in RDS/Aurora PostgreSQL.