doc(crypto): Add changelog entry for #4424

crates/matrix-sdk-crypto/CHANGELOG.md

@@ -2,6 +2,16 @@
 
 All notable changes to this project will be documented in this file.
 
+## Unreleased changes
+
+### Bug fixes
+
+- Fix [#4424](https://github.com/matrix-org/matrix-rust-sdk/issues/4424) Failed
+  storage upgrade for "PreviouslyVerifiedButNoLonger". This bug caused errors to
+  occur when loading crypto information from storage, which typically prevented
+  apps from starting correctly.
+  ([#4430](https://github.com/matrix-org/matrix-rust-sdk/pull/4430))
+
 ## [0.8.0] - 2024-11-19
 
 ### Features