Update homepage words for 2025

[xen0n]

For easier peer review, here are the text extracted out from the code (that's interspersed with i18n directives):

夕惕若厉！

不出意外地，2023-2024 是龙架构基础生态建设风生水起的两年。在多数的基础设施项目，龙架构支持都已成功并入主线、受到持续维护。

然而，外部形势波诡云谲，我们的事业面对着，并且仍将面对更多技术的、非技术的挑战乃至风险：更广阔的使用场景、更多元的用户人群，我们的工作量与困难前无古人。

我们认为 2025-2026 对龙架构生态而言是关键的转折点。世界瞬息万变，唯有终日乾乾、夕惕若厉；动心忍性，枕戈待旦。与君共勉！

Translation:

STAYVIGILANT!

As expected, 2023-2024 were two thriving years of LoongArch. LoongArch support has been successfully mainlined in most infrastructure projects, and enjoys continued maintenance.

However, the external environment is ever more turbulent; our mission faces, and will continue to face, more challenges and risks that are both technical and non-technical: our workload and hardship are unprecedented in the face of broader use cases and more diverse user communities.

We believe 2025-2026 to be a critical period of transition for the LoongArch ecosystem. In the face of a world ever-changing, only by vigilance and perseverance can we see the light of day, through a journey of self-perfection. Time to get down to work!