databases/postgresql15-*: update to 15.rc2
Several bug fixes were applied for PostgreSQL 15 during the RC 1 period.
These include:
Reverting the "optimized order of GROUP BY keys" feature.
Fix behavior for the \g command in psql with multi-command strings.
Fix memory leak in single-column sorts.
Fix for behavior of PQsslAttribute libpq function.
To upgrade to PostgreSQL 15 RC 2 from earlier versions of PostgreSQL,
you will need to use a major version upgrade strategy, e.g. pg_upgrade
or pg_dump / pg_restore. For more information, please visit the
documentation section on upgrading.
URL: https://www.postgresql.org/docs/15/static/upgrading.html
Release notes: https://www.postgresql.org/about/news/postgresql-15-rc-2-released-2521/