chore(deps): update dependency langchain-core to v1

[renovate-bot]

This PR contains the following updates:

Package	Change	Age	Confidence
langchain-core (source, changelog)	==0.2.33 -> ==1.1.0

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Summary of Changes

Hello @renovate-bot, I'm Gemini Code Assist[^1]! I'm currently reviewing this pull request and will post my feedback shortly. In the meantime, here's a summary to help you and other reviewers quickly get up to speed!

This pull request focuses on maintaining the project's dependencies by upgrading the langchain-core library to its latest major version, 1.1.0. This update is crucial for ensuring that the generative_ai examples remain compatible with the most recent advancements and features offered by the LangChain ecosystem, promoting stability and access to new functionalities.

Highlights

• Dependency Update: The langchain-core dependency has been updated from version 0.2.33 to 1.1.0. This is a major version upgrade, indicating significant changes and potential breaking changes in the library.
• Scope of Change: This update is applied across several requirements.txt files within the generative_ai directory, specifically affecting evaluation, extensions, image_generation, model_garden, model_tuning, prompts, and reasoning_engine subdirectories.

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