[Snyk] Upgrade langchain from 0.0.155 to 0.2.3#5

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Avish24x wants to merge 1 commit intomainfrom snyk-upgrade-c60e6bba952d7eab9b506b23acf24fc7

+306-482

Commits on Jun 20, 2024

fix: upgrade langchain from 0.0.155 to 0.2.3
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