Spring AI Add audio-related multimodal integration tests for the large model with the newly added audio input function.

Currently, some models in this project lack multimodal integration tests for audio input types. Mistral AI in pr has added audio input but lacks relevant integration tests . I will make my contribution in this regard and submit my PR as soon as possible. Also, thanks to @YunKuiLu for the help 🙏😊(my English is not very good.) This is the Chinese translation. If there are any unclear expressions, please let me know and I will supplement them in time.

Comment From: CodeCodeAscension

目前，该项目缺乏针对音频输入类型的多模态集成测试（来自 #3903（评论））。我将在这方面做出贡献，并尽快提交我的 PR。另外，感谢您的帮助🙏😊（我的英语不好。这是中文翻译。如有不清楚的表达，请告知，我会及时补充）

I'm dealing with this problem

Comment From: ilayaperumalg

@CodeCodeAscension Thank you for your interest! Looking forward to your contributions