Sandbox mount config; secret anonymizer preset

What's Changed

• feat(sandbox): send mount_config for mounts by @DanielKneipp in https://github.com/langchain-ai/langsmith-sdk/pull/3051
• feat(anonymizer): curated secret-detection preset (createSecretAnonymizer) by @paarth-a in https://github.com/langchain-ai/langsmith-sdk/pull/3059
• chore: sync langsmith_api by @langtions-bot[bot] in https://github.com/langchain-ai/langsmith-sdk/pull/3033
• fix(python): allow-list fields accepted from baggage replica updates by @QuentinBrosse in https://github.com/langchain-ai/langsmith-sdk/pull/3067
• release(py): 0.9.0 by @QuentinBrosse in https://github.com/langchain-ai/langsmith-sdk/pull/3068

New Contributors

• @paarth-a made their first contribution in https://github.com/langchain-ai/langsmith-sdk/pull/3059

Full Changelog: https://github.com/langchain-ai/langsmith-sdk/compare/v0.8.18...v0.9.0