Adaptive translation is Generally Available and adds Portuguese support, raises the limit for input and output characters, and decreases latency in the API and console

## Feature [Adaptive translation](https://cloud.google.com/translate/docs/advanced/adaptive-translation) is [Generally Available](https://cloud.google.com/products#product-launch-stages) and adds Portuguese support, raises the limit for input and output characters, and decreases latency in the API and console.