Draft: Rename GCP project
We'd like to rename our old GCP project from unreview-poc-390200e5
to gitlab-ai-assisted-prd
. This MR replaces the instances of the old project name with the new one.
Relates to https://gitlab.com/gitlab-com/gl-infra/reliability/-/issues/23620
NOTE: some lines cannot be changed yet, we need a new link for the BQ datasets and the json key.