Update to Gradle 8.7, for Java 21 support

[xtexx]

[Alumopper]

不知道为什么我的gradle升级到8.7，使用java 21之后，我就不能正常构建了，不知道是ide的问题还是什么的，之前我试过用java21的说。 至少在我解决我idea用不了之前，先暂时留在java17吧

I don't know why after upgrading my Gradle to 8.7, I couldn't build the project properly. I'm not sure if it's an issue with the IDE or something. I had tried using Java 21 before. At least stay in Java17 for now until I solve my IDEA's problem.

[xtexx]

不知道，我在加上 c2f6545196c59a10bb0dd28982cdc6eaba822981 之后就可以了