Private Service Connect backends can be used to reach regional endpoints for supported Google APIs

## Change [Private Service Connect backends](https://cloud.google.com/vpc/docs/private-service-connect-backends) can be used to reach [regional endpoints](https://cloud.google.com/vpc/docs/regional-service-endpoints) for supported Google APIs. Regional endpoints replace locational endpoints for Private Service Connect backends. ## Change The list of [supported regional endpoints](https://cloud.google.com/vpc/docs/regional-service-endpoints) that can be accessed by Private Service Connect [endpoints](https://cloud.google.com/vpc/docs/about-accessing-regional-google-apis-endpoints) and [backends](https://cloud.google.com/vpc/docs/private-service-connect-backends) is updated to include additional supported Google APIs and regions.