fix: disable pgsodium event trigger when swapping roles

[soedirgo]

pgsodium drops decrypted_* views when we run alter table ... owner to ..., making the list of relations stale. This causes some grants to fail because these views no longer exist when the grants are run.

• Sanity tested on stg:

CREATE TABLE public.users (
	id bigserial primary key,
	secret text);

select * from pgsodium.create_key();

SECURITY LABEL FOR pgsodium	ON COLUMN public.users.secret
  IS 'ENCRYPT WITH KEY ID <the key>';