chore(deps): weekly dependency update

[github-actions]

Automated weekly dependency update via python scripts/update-matrix-latest.py && uv lock --upgrade.

⚠️ Provider SDK packages changed. A human needs to re-record cassettes locally before merging.

Summary by Sourcery

Update pinned versions for the latest entries in the Braintrust Python provider and tooling matrix to the current upstream releases and refresh the lockfile accordingly.

Enhancements:

• Bump the "latest" matrix versions for multiple provider SDKs (e.g., OpenAI, Anthropic, Cohere, Google GenAI/OpenRouter/Mistral) and agent/tooling libraries (e.g., langchain-core, llama-index-core, crewai, dspy, pytest) in pyproject.toml to their newest supported releases.

Chores:

• Regenerate the Python dependency lockfile (uv.lock) to align with the updated matrix dependency versions.

[sourcery-ai]

Reviewer's Guide

Updates the Braintrust Python dependency matrix to the latest provider SDK and related library versions and refreshes the uv.lock lockfile accordingly.

File-Level Changes

Change	Details	Files
Update Braintrust provider SDK and ecosystem library versions in the dependency test matrix to their latest supported releases.	Bump the latest versions for multiple provider SDKs (OpenAI, Anthropic, Cohere, Mistral, Google GenAI/OpenRouter, etc.) in the Braintrust matrix configuration. Update latest versions for higher-level orchestration and agent frameworks (litellm, claude-agent-sdk, agno, agentscope, strands-agents, autoevals, dspy, crewai, google-adk, langchain-core, llama-index-core, temporalio, pytest). Keep older pinned versions intact to preserve backwards-compatibility coverage in the matrix while moving the latest pointer forward.	py/pyproject.toml
Regenerate the Python dependency lockfile to align with the updated matrix versions.	Re-run uv lock --upgrade to refresh all locked dependency versions transitively impacted by the updated provider SDK and framework pins. Ensure the lockfile is consistent with the new pyproject.toml constraints for reproducible installs and CI runs.	py/uv.lock

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[sourcery-ai]

Hey - I've left some high level feedback:

• For dependencies with major version bumps (e.g., agentscope 1.x → 2.x, google-genai 1.x → 2.x, google-adk 1.x → 2.x), consider adding explicit matrix entries for the latest 1.x line if you still need to validate compatibility with the previous major.
• Given the large version jump for claude-agent-sdk and anthropic, it might be worth checking whether any new optional extras or transport options they introduce should be reflected in your matrix configuration (e.g., additional variants or flags) rather than only bumping the latest pin.

Prompt for AI Agents

Please address the comments from this code review:

## Overall Comments
- For dependencies with major version bumps (e.g., agentscope 1.x → 2.x, google-genai 1.x → 2.x, google-adk 1.x → 2.x), consider adding explicit matrix entries for the latest 1.x line if you still need to validate compatibility with the previous major.
- Given the large version jump for `claude-agent-sdk` and `anthropic`, it might be worth checking whether any new optional extras or transport options they introduce should be reflected in your matrix configuration (e.g., additional variants or flags) rather than only bumping the `latest` pin.

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