Nihar Prakash Asare

Added support to additional MIME types for Gemini model

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## Title Add support for additional MIME types in Gemini models ## Relevant issues Fixes #9416 ## Pre-Submission checklist **Please complete all items before asking a LiteLLM maintainer to review...

Use `jiff` date-time crate

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### Related * Closes #9317 (Most of the migrations are done) * Implements TODO: Migrate from time and chrono to jiff when upgrading to pyo3 0.24 ### What This PR...