docs: update README with v1.7.0 release entry

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>

Author: Issac-Newton

README.md

@@ -155,11 +155,11 @@ if __name__ == "__main__":
 
 | Date | Release |
 |:-------------|:---|
-| **[Latest]** | 🎉 ROCK v1.5.1 Released — [Release Notes](https://alibaba.github.io/ROCK/docs/Release%20Notes/v1.5.1) |
+| **[Latest]** | 🎉 ROCK v1.7.0 Released — [Release Notes](https://alibaba.github.io/ROCK/docs/Release%20Notes/v1.7.0) |
+| **[2026-04-23]** | 🎉 ROCK v1.5.1 Released — [Release Notes](https://alibaba.github.io/ROCK/docs/Release%20Notes/v1.5.1) |
 | **[2026-04-10]** | 🎉 ROCK v1.4.7 Released — [Release Notes](https://alibaba.github.io/ROCK/docs/Release%20Notes/v1.4.7) |
 | **[2026-03-27]** | 🎉 ROCK v1.4.4 Released — [Release Notes](https://alibaba.github.io/ROCK/docs/Release%20Notes/v1.4.4) |
 | **[2026-03-24]** | 🎉 ROCK v1.4.3 Released — [Release Notes](https://alibaba.github.io/ROCK/docs/Release%20Notes/v1.4.3) |
-| **[2026-03-17]** | 🎉 ROCK v1.4.2 Released — [Release Notes](https://alibaba.github.io/ROCK/docs/Release%20Notes/v1.4.2) |
 
 ---