Add GuardianDB v0.11.28 update to newsletter

Added update for GuardianDB v0.11.28 release.

Author: wmaslonek

draft/2025-11-19-this-week-in-rust.md

@@ -45,6 +45,8 @@ and just ask the editors to select the category.
 
 ### Project/Tooling Updates
 
+* [GuardianDB v0.11.28: Complete migration from tracing to slog, batch processor integrated with the Iroh backend, and GuardianDB is now available on crates.io.](https://www.willsearch.com.br/blog/2025/11/18/whats-new-in-guardiandb-v0-11-18/)
+
 ### Observations/Thoughts
 
 ### Rust Walkthroughs