docs(CHANGELOG): update CHANGELOG.md

Author: WSH032

CHANGELOG.md

@@ -27,6 +27,14 @@ and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0
 
 - [#30](https://github.com/WSH032/fastapi-proxy-lib/pull/30) - fix(internal): use `websocket` in favor of `websocket_route`. Thanks [@WSH032](https://github.com/WSH032)!
 
+### Removed
+
+- [#49](https://github.com/WSH032/fastapi-proxy-lib/pull/49) - Drop support for `Python 3.8`.
+
+### Fixed
+
+- [#49](https://github.com/WSH032/fastapi-proxy-lib/pull/49) - fix!: bump `httpx-ws >= 0.7.1` to fix frankie567/httpx-ws#29. Thanks [@WSH032](https://github.com/WSH032)!
+
 ### Internal
 
 - [#47](https://github.com/WSH032/fastapi-proxy-lib/pull/47) - test: do not use deprecated and removed APIs of httpx. Thanks [@WSH032](https://github.com/WSH032)!