12 to 13 migration, the privs error with pg_pltemplate

So I'm getting the error when migrating about not being able to GRANT SELECT on pg_catalog.pg_pltemplate, as referenced
here:

https://www.postgresql-archive.org/pg-upgrade-issue-upgrading-10-gt-13-td6156401.html

BUT:

- we have never intentionally modified privs on system tables
- I tried REVOKE ALL FROM pg_catalog.pg_pltemplate ... in the source database, still got the same error
- \dp pg_catalog.pg_pltemplate only shows:

postgres=ardDxt/postgres+
=r/postgres

Suggestions?

--
Scott Ribe
scott_ribe@elevated-dev.com
https://www.linkedin.com/in/scottribe/