This pull request addresses issue #111 by updating the `dataclasses.replace` calls to `call_args.model_copy(update={...})` in the `DefaultRetryStrategy` class. This change is necessary because `SpiceCallArgs` has been converted from a dataclass to a Pydantic model. The updates ensure that the retry strategy correctly modifies the `temperature` attribute of `call_args` based on the attempt number.

This commit further addresses issue #111 by updating additional `dataclasses.replace` calls to `call_args.model_copy(update={...})` in the `spice/models.py` file. This change is necessary because `SpiceCallArgs` has been converted from a dataclass to a Pydantic model. The updates ensure that the model copying mechanism is consistent across the codebase. 

Additionally, the unnecessary import of `dataclasses` has been removed from `default_strategy.py`.

This commit addresses the CI failure in pull request #112 by reformatting the `spice/models.py` file to comply with the required code style. The `model_copy` call has been split into multiple lines to ensure proper formatting. This change should resolve the CI error and allow the pull request to pass the checks.

This commit addresses a CI failure caused by a formatting issue in `spice/models.py`. The file has been reformatted to comply with the project's code style guidelines. This should resolve the CI failure and allow the pull request to pass all checks.

Reverted changes in `spice/models.py` to keep using `dataclasses.replace` for the `Model` class, as it remains a dataclass. Updated only the `SpiceCallArgs`-related code in `DefaultRetryStrategy` to use `model_copy` for Pydantic model updates. This ensures correct handling of both dataclasses and Pydantic models.

This commit addresses a CI failure caused by an incorrect attribute access in `spice/models.py`. The error was due to attempting to access the `model_copy` attribute on a class that does not have it. The fix involves reverting the change to use `dataclasses.replace` for the `Model` class, which is still a dataclass, while keeping the `model_copy` usage for the `SpiceCallArgs` class, which has been converted to a Pydantic model. This ensures compatibility and correct behavior for both dataclasses and Pydantic models in our codebase.

This commit addresses a CI failure caused by an incorrect attribute access in `models.py`. The error was due to attempting to access the `model_copy` attribute on a dataclass, which does not exist. The fix involves reverting the change to use `dataclasses.replace` for the `Model` class while keeping the `model_copy` method for the `SpiceCallArgs` class, which is a Pydantic model. This ensures compatibility and correct behavior for both dataclasses and Pydantic models in our codebase.