Add announcement of diesel-async 0.6.0

Author: weiznich

draft/2025-07-02-this-week-in-rust.md

@@ -40,6 +40,7 @@ and just ask the editors to select the category.
 
 ### Project/Tooling Updates
 * [Asterinas: a new Linux-compatible kernel project](https://lwn.net/SubscriberLink/1022920/14dfdc76df0f1b96/)
+* [Diesel Async 0.6.0](https://blog.weiznich.de/blog/diesel-async-0-6/)
 
 ### Observations/Thoughts