DeepSpeed

e04fa3e6 - Update README with ZenFlow release blog featured by PyTorch. (#7520)

Update README with ZenFlow release blog featured by PyTorch. (#7520) **Main change:** Add post bullet and link to ZenFlow release blog on latest news. **Blog link:** https://pytorch.org/blog/zenflow-stall-free-offloading-engine-for-llm-training/ --------- Signed-off-by: Tingfeng Lan <erc8gx@virginia.edu>