AlloyDB for PostgreSQL - July 9th, 2024 [Change, Feature]

## Change The extension `pgvector` is updated to version 0.7.0. ## Feature Performing a [switchover with zero data loss](https://cloud.google.com/alloydb/docs/cross-region-replication/about-cross-region-replication#benefits) in cross-region replication setups, to test disaster recovery (DR) or to perform workload migration, is now generally available ([GA](https://cloud.google.com/products#product-launch-stages)).