Changelog entry for retry-policies 0.5

Author: musicinmybrain

reqwest-middleware/CHANGELOG.md

@@ -6,6 +6,9 @@ and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0
 
 ## [Unreleased]
 
+### Breaking Changes
+- Updated `retry-policies` (re-exported as `reqwest_retry::policies`) to 0.5.
+
 ## [0.4.2] - 2025-04-08
 
 ### Added