fix(deps): update langchain-core to 0.3.81 to fix CVE-2025-68664 (#11395)

* [Dependabot Alert #807] Scaffold PR for langchain-core

* fix(deps): update langchain-core to 0.3.81 to fix CVE-2025-68664

- Update langchain from ^0.1.20 to ^0.3.25 to pull in patched langchain-core
- Update Python requirement from ^3.8.1 to ^3.9 (required by langchain-core 0.3.81)
- Remove scaffold file alert-807.md

Co-Authored-By: unknown <>

* fix(deps): update langchain to 0.3.25 with Python 3.9+ marker for CVE-2025-68664

- Add Python version marker (>=3.9) to langchain dependency
- Keep Python 3.8 support in pyproject.toml
- Regenerate poetry.lock with Poetry 1.8.5
- langchain-core 0.3.81 (patched) will be used on Python 3.9+

Co-Authored-By: unknown <>

* fix(deps): regenerate poetry.lock with Poetry 1.8.4

Use the correct Poetry version (1.8.4) matching the original lock file

Co-Authored-By: unknown <>

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Co-authored-by: github-actions[bot] <41898282+github-actions[bot]@users.noreply.github.com>
Co-authored-by: Devin AI <158243242+devin-ai-integration[bot]@users.noreply.github.com>

Author: github-actions[bot]