Officially support Python 3.12 and 3.13

**Describe the feature you'd like**

I'd like to see official guarantees that this Python package runs under Python 3.12 and 3.13, which were released on 2023-10-02 and 2024-10-07 respectively. I can only see support for Python 3.11 in [`pyproject.toml`](https://github.com/aws/sagemaker-python-sdk/blob/8a559adde94689590320203c41ac5a49cd17185e/pyproject.toml#L31).

**How would this feature be used? Please describe.**

Ensure I can move my own code to Python 3.12 and 3.13 and benefit from the features from these releases.

**Describe alternatives you've considered**

Using the sdk although it's not officially supported with Python 3.12 und 3.13 and YOLO. 😀

まず、31行目のpyproject.tomlにあるサポート対象Pythonバージョンの宣言を確認し、次に、互換性がどこでテストまたは保証されているかを確認するため、リポジトリの設定を調べます。Python 3.12と3.13が正式に含まれ、パッケージの互換性チェックが両方のバージョンで通れば完了です。

索引モデルが issue の本文から書いたものです。