Update spice

[PCSwingle]

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[mentatbot]

MENTAT CODE REVIEW IN ACTIVE DEVELOPMENT. Only in use on mentat and internal repos.
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This pull request introduces several improvements and updates, including better type hinting with the List type, enhancements in error handling and user prompts in LlmApiHandler, and a version update for spiceai. These changes contribute to the code's readability, maintainability, and user experience. It's also good to see attention to detail in handling server context-specific behavior and providing flexibility in session configuration. Overall, these updates are well thought out and beneficial to the project.