Spanner parameterized views are now generally available (GA)

## Feature Feature Spanner [parameterized views](https://cloud.google.com/spanner/docs/parameterized-views)are now generally available ([GA](https://cloud.google.com/products#product-launch-stages)). Parameterized views let you dynamically filter data based on session context parameters passed with queries, helping you isolate tenant data and restrict data access in AI agent and LLM applications. For more information, see [Create a parameterized view](https://cloud.google.com/spanner/docs/create-manage-views#create-parameterized-view)and [Use parameterized views](https://cloud.google.com/spanner/docs/use-parameterized-views).