Claude Sonnet 3.7 is no longer supported in Bedrock

https://github.com/awslabs/agentcore-samples/blob/bb763db66c49cfaea69dfebdfead3d1c2149f699/04-infrastructure-as-code/terraform/end-to-end-weather-agent/agent-code/weather_agent.py#L86

Need to update the model, and the versions of `browser-use` and `langchain-aws` used to go with the new model

Start with 04-infrastructure-as-code/terraform/end-to-end-weather-agent/agent-code/weather_agent.py at line 86 and inspect the current model selection. Check how the sample pins or installs browser-use and langchain-aws, then identify compatible versions for a supported Bedrock model. Done means the weather-agent sample uses the updated model and dependency versions without the reported support failure.

Written by the indexing model from the issue text.