fix(chat-pdf): update dependency langgraph to v0.2.62

[renovate]

This PR contains the following updates:

Package	Change	Age	Adoption	Passing	Confidence
langgraph	==0.2.61 -> ==0.2.62

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Release Notes

langchain-ai/langgraph (langgraph)

v0.2.62

Compare Source

Changes since 0.2.61

• langgraph: release 0.2.62 (#​2990)
• langgraph: add structured output to create_react_agent (#​2848)
• build(deps-dev): bump jinja2 from 3.1.4 to 3.1.5 in /libs/langgraph (#​2960)
• langgraph[patch]: fix create_react_agent inspectability (#​2948)
• docs: readme nit (#​2899)
• Clarifying the docstring for the add_edge function (#​2782)

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[sonarqubecloud]

Quality Gate passed

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[github-actions]

🎉 This PR is included in version 1.133.0 🎉

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