Update Mistral provider models (#60898)

# Objective

- Update Mistral models according to their
[documentation](https://docs.mistral.ai/models/overview).

## Solution

- Remove deprecated models
- Update Mistral Medium to 3.5

## Self-Review Checklist:

- [x] I've reviewed my own diff for quality, security, and reliability
- [ ] Unsafe blocks (if any) have justifying comments
- [ ] The content adheres to Zed's UI standards
([UX/UI](https://github.com/zed-industries/zed/blob/main/CONTRIBUTING.md#uiux-checklist)
and
[icon](https://github.com/zed-industries/zed/blob/main/crates/icons/README.md)
guidelines)
- [ ] Tests cover the new/changed behavior
- [ ] Performance impact has been considered and is acceptable

---

Release Notes:

- Remove deprecated Mistral models and update to Mistral Medium 3.5

Signed-off-by: Gabriel Linder <linder.gabriel@gmail.com>
33a29660b3Gabriel Linder committed on 7/21/2026, 9:41:32 AM· committed by GitHubparent2500224
1 file changedLine totals unavailable