docs: add CHANGELOG entry for etcd disconnect crash fix

Author: datlechin

CHANGELOG.md

@@ -18,6 +18,7 @@ and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0
 ### Fixed
 
 - Saved connections disappearing after normal app quit (Cmd+Q) while persisting after force quit (#452)
+- Crash when disconnecting an etcd connection while requests are in-flight
 - Detail pane showing truncated values for LONGTEXT/MEDIUMTEXT/CLOB columns, preventing correct editing
 - Redis hash/list/set/zset/stream views showing empty or misaligned rows when values contained binary, null, or integer types