Merge #1126

1126: Fix type of from field in TaskResults so get_tasks doesn't crash r=curquiza a=ddboline

# Pull Request

## Related issue
Fixes #1125

## What does this PR do?
- Updates the type of TaskResults.from to match the type returned by rust

## PR checklist
Please check if your PR fulfills the following requirements:
- [ ] Does this PR fix an existing issue, or have you listed the changes applied in the PR description (and why they are needed)?
- [ ] Have you read the contributing guidelines?
- [ ] Have you made sure that the title is accurate and descriptive of the changes?

Thank you so much for contributing to Meilisearch!


<!-- This is an auto-generated comment: release notes by coderabbit.ai -->

## Summary by CodeRabbit

* **Refactor**
  * Improved flexibility of the task results display by allowing the related field to be optional.

<!-- end of auto-generated comment: release notes by coderabbit.ai -->

Co-authored-by: Daniel Boline <ddboline@gmail.com>

Author: meili-bors[bot]

meilisearch/models/task.py

@@ -110,7 +110,7 @@ class TaskResults(CamelBase):
     results: List[Task]
     limit: int
     total: int
-    from_: int
+    from_: Optional[int]
     next_: Optional[int]