chore: release v0.15.4

Author: github-actions[bot]

CHANGELOG.md

@@ -7,6 +7,13 @@ and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0
 
 ## [Unreleased]
 
+## [0.15.4](https://github.com/rust-lang/hashbrown/compare/v0.15.3...v0.15.4) - 2025-05-28
+
+### Other
+
+- Merge pull request #623 from cppbear/add-tests
+- add test for HashMap::get_mut with non-existent key
+
 ## [0.15.3](https://github.com/rust-lang/hashbrown/compare/v0.15.2...v0.15.3) - 2025-04-29
 
 ### Added

Cargo.toml

@@ -1,6 +1,6 @@
 [package]
 name = "hashbrown"
-version = "0.15.3"
+version = "0.15.4"
 authors = ["Amanieu d'Antras <[email protected]>"]
 description = "A Rust port of Google's SwissTable hash map"
 license = "MIT OR Apache-2.0"