pg_ivm 1.9 released

IVM Development Group is pleased to announce the release of [pg_ivm 1.9]( https://github.com/sraoss/pg_ivm/releases/tag/v1.9 ).

Changes since the v1.8 release include:

### Bug fixes

* Add support for PostgreSQL 17 (Yugo Nagata, Takuma Hoshiai, reshke)

This contains the following changes:

- Change functions to use a safe search_path during maintenance operations when used with PostgreSQL 17

This prevents maintenance operations (automatic maintenance of IMMVs and refresh_immv) from performing
unsafe access. Functions used by IMMVs that need to reference non-default schemas must specify a search
path during function creation.

- refresh_immv can be executed by users with the MAINTAIN privilege when used with PostgreSQL 17

### About pg_ivm

pg_ivm is an extension module that provides Incremental View Maintenance (IVM) feature.

Incremental View Maintenance (IVM) is a way to make materialized views up-to-date in
which only incremental changes are computed and applied on views rather than recomputing.
pg_ivm provides a kind of immediate maintenance, in which materialized views are updated
immediately after a base table is modified.

Source repository: [https://github.com/sraoss/pg_ivm](https://github.com/sraoss/pg_ivm)