add blog link (#7385)

add a blog link to Arctic Long Sequence Training (ALST) with DeepSpeed

Author: stas00

README.md

@@ -15,6 +15,7 @@
 
 ## Latest News
 <b> <span style="color:orange" > DeepSpeed empowers ChatGPT-like model training with a single click, offering 15x speedup over SOTA RLHF systems with unprecedented cost reduction at all scales; [learn how](https://github.com/deepspeedai/DeepSpeed/tree/master/blogs/deepspeed-chat)</span>.</b>
+* [2025/06] [Arctic Long Sequence Training (ALST) with DeepSpeed: Scalable And Efficient Training For Multi-Million Token Sequences](https://www.snowflake.com/en/engineering-blog/arctic-long-sequence-training-multi-million-token-ai/)
 * [2025/04] [DeepCompile: Unlocking Compiler Optimization for Distributed Training](https://github.com/deepspeedai/DeepSpeed/blob/master/blogs/deepcompile/README.md)
 * [2025/03] [DeepSpeed-AutoTP: Automatic Tensor Parallel Training of Hugging Face models](https://github.com/deepspeedai/DeepSpeed/blob/master/blogs/huggingface-tp/README.md)
 * [2024/12] [Ulysses-Offload: Democratizing Long Context LLM Training ](https://github.com/deepspeedai/DeepSpeed/blob/master/blogs/ulysses-offload/README.md)