Merge #661

661: Task & TaskInfo datetime consistency r=alallema a=Azanul

# Pull Request

## Related issue
Fixes #615

## What does this PR do?
- Adds `datetime` type consistency across the SDK
- Adapts corresponding tests

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


Co-authored-by: Azanul <[email protected]>
Co-authored-by: Azanul Haque <[email protected]>
Co-authored-by: Amélie <[email protected]>

Author: 3 people

meilisearch/models/task.py

@@ -1,6 +1,7 @@
 from __future__ import annotations
 
-from typing import Any, Dict, List, Union
+from datetime import datetime
+from typing import Any, Dict, List, Optional, Union
 
 from camel_converter.pydantic_base import CamelBase
 
@@ -13,18 +14,18 @@ class Task(CamelBase):
     details: Dict[str, Any]
     error: Union[Dict[str, Any], None]
     canceled_by: Union[int, None]
-    duration: str
-    enqueued_at: str
-    started_at: str
-    finished_at: str
+    duration: Optional[str]
+    enqueued_at: datetime
+    started_at: Optional[datetime]
+    finished_at: Optional[datetime]
 
 
 class TaskInfo(CamelBase):
     task_uid: int
     index_uid: Union[str, None]
     status: str
     type: str
-    enqueued_at: str
+    enqueued_at: datetime
 
 
 class TaskResults: