bump: to v1.0.0-rc.4 (#39)

* bump: to v1.0.0-rc.4

* update: versions

* security: cargo vet

Author: geofmureithi

CHANGELOG.md

@@ -7,6 +7,10 @@ and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0
 
 ## [Unreleased]
 
+## [1.0.0-rc.4] - 2026-02-21
+
+- _bump_: to v1.0.0-rc.4 (#39)
+
 ## [1.0.0-rc.3] - 2026-02-02
 
 - _bump_: to v1.0.0-rc.3 (#36)