Add Reducing Cargo target directory size with -Zno-embed-metadata blog post link

Author: Kobzol

draft/2025-06-04-this-week-in-rust.md

@@ -42,6 +42,8 @@ and just ask the editors to select the category.
 
 ### Observations/Thoughts
 
+* [Reducing Cargo target directory size with -Zno-embed-metadata](https://kobzol.github.io/rust/rustc/2025/06/02/reduce-cargo-target-dir-size-with-z-no-embed-metadata.html)
+
 ### Rust Walkthroughs
 
 ### Research