Add Dex1B publication

Signed-off-by: Eric Shi <ershi@nvidia.com>

Author: shi-eric

PUBLICATIONS.md

@@ -7,6 +7,7 @@ pull request on GitHub or email a link to your arXiv preprint (preferred) or DOI
 
 ## 2025
 
+- **Dex1B: Learning with 1B Demonstrations for Dexterous Manipulation**. *J. Ye, K. Wang, C. Yuan, R. Yang, Y. Li, J. Zhu, Y. Qin, X. Zou, X. Wang*. June 2025. [arXiv:2506.17198](https://arxiv.org/abs/2506.17198)
 - **Learning Fast, Tool-Aware Collision Avoidance for Collaborative Robots**. *J. Lee, Y. Kim, S. Kim, Q. Nguyen, Y. Heo*. June 2025. [DOI:10.1109/lra.2025.3579207](https://doi.org/10.1109/lra.2025.3579207)
 - **Co-Design of Soft Gripper with Neural Physics**. *S. Yi, X. Bai, A. Singh, J. Ye, M. T. Tolley, X. Wang*. May 2025. [arXiv:2505.20404](https://arxiv.org/abs/2505.20404)
 - **MAGIC: Motion-Aware Generative Inference via Confidence-Guided LLM**. *S. Meng, Y. Luo, P. Liu*. May 2025. [arXiv:2505.16456](https://arxiv.org/abs/2505.16456)