[Feature Request] I want it to be compatible with nova 2 Series

## Describe the solution you'd like

I want it to be compatible with nova 2 Series

## Why the solution needed

nova 2 Series is now available on Bedrock. I want to experience the latest performance.

## Additional context

Add any other context or screenshots about the feature request here.

## Implementation feasibility

Are you willing to collaborate with us to discuss the solution, decide on the approach, and assist with the implementation?

- [ ] Yes, I am able to implement the feature and create a pull request.
- [x] No, I am unable to implement the feature, but I am open to discussing the solution.

The issue names no files, tests, or entry points. Start by locating the repository's Bedrock model-selection and integration code, then determine the compatibility requirements for the nova 2 Series; done means the chatbot can use nova 2 models on Bedrock and the relevant behavior is verified.

Written by the indexing model from the issue text.