Add StrongBox announcement blog post

Author: mpalmer

draft/2025-08-27-this-week-in-rust.md

@@ -45,6 +45,8 @@ and just ask the editors to select the category.
 
 ### Project/Tooling Updates
 
+* [StrongBox: Simple, Safe Data Encryption for Rust](https://www.hezmatt.org/~mpalmer/blog/2025/08/27/strong-box-simple-safe-data-encryption-for-rust.html)
+
 ### Observations/Thoughts
 
 ### Rust Walkthroughs