fix: update llama-index requirement from <=0.6.7,>=0.6.0 to >=0.6.0,<=0.6.8

[dependabot]

Updates the requirements on llama-index to permit the latest version.

Commits

• 9db7c88 cr
• afbeacf Milvus load and guide fix (#3378)
• 8ae9fa8 Update demo notebook for Pinecone (#2102)
• aae8d56 Adding kwargs to OpenAI get_embedding calls (#3248)
• 3baffc7 Support page label for PDF (#3346)
• d0da47e Query Index with SVM causes value error when similarity_top_k > 1 (#3375)
• 52b756b Refactor file parsers to file readers to be consistent with llama hub (#3352)
• 3557147 update tutorials with local models (#3373)
• 925f98b readability: LangChain example AgentExecutor variable (#3356)
• 98f4247 [version] bump version to 0.6.7 (#3349)
• Additional commits viewable in compare view

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[github-actions]

Summary by GPT-4

In this diff, the dependency version for llama-index has been updated. The previous version constraint was >=0.6.0,<=0.6.7, and it has been changed to >=0.6.0,<=0.6.8. This means that the project now supports and requires a version of llama-index between 0.6.0 and 0.6.8 (inclusive).

Suggestions

Here are some suggestions for improving the changes in this PR:

1. Add a brief description of the reason for updating the dependency version. For example, you can mention if it's for a bug fix, new feature, or performance improvement.

2. If there are any breaking changes in the updated dependency, make sure to test your code thoroughly and update any affected parts of your codebase.

3. Update the documentation if necessary to reflect any changes introduced by the updated dependency.

4. Consider adding a changelog entry to inform users about the update and its impact on your project.

5. If possible, provide a link to the release notes or changelog of the updated dependency for reference.

Here's an example of how you can incorporate these suggestions into your PR description:

This PR updates the `llama-index` dependency from version 0.6.7 to 0.6.8 to take advantage of bug fixes and performance improvements introduced in the latest release.

Please refer to [llama-index's changelog](https://github.com/username/llama-index/blob/main/CHANGELOG.md) for more information on what has changed in version 0.6.8.

We have tested our code with this updated dependency and made necessary adjustments to ensure compatibility with this new version.