chore(deps-dev): bump mypy from 1.4.1 to 1.8.0 (#3710)

* chore(deps-dev): bump mypy from 1.4.1 to 1.8.0

Bumps [mypy](https://github.com/python/mypy) from 1.4.1 to 1.8.0.
- [Changelog](https://github.com/python/mypy/blob/master/CHANGELOG.md)
- [Commits](python/mypy@v1.4.1...v1.8.0)

---
updated-dependencies:
- dependency-name: mypy
  dependency-type: direct:development
  update-type: version-update:semver-minor
...

Signed-off-by: dependabot[bot] <[email protected]>

* Fixing mypy problems

---------

Signed-off-by: dependabot[bot] <[email protected]>
Co-authored-by: dependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com>
Co-authored-by: Leandro Damascena <[email protected]>

Author: dependabot[bot]

aws_lambda_powertools/metrics/provider/cloudwatch_emf/cloudwatch.py

@@ -241,8 +241,8 @@ def serialize_metric_set(
                 ],
             },
             # NOTE: Mypy doesn't recognize splats '** syntax' in TypedDict
-            **dimensions,  # type: ignore[misc] # "service": "test_service"
-            **metadata,  # "username": "test"
+            **dimensions,  # "service": "test_service"
+            **metadata,  # type: ignore[typeddict-item] # "username": "test"
             **metric_names_and_values,  # "single_metric": 1.0
         }
 

examples/idempotency/src/working_with_idempotent_function_custom_output_serializer.py

@@ -30,7 +30,7 @@ def __init__(self, order_id: int):
 
 
 def order_to_dict(x: Type[OrderOutput]) -> Dict:  # (1)!
-    return x.__dict__
+    return dict(x.__dict__)
 
 
 def dict_to_order(x: Dict) -> OrderOutput:  # (2)!