update changelog (#899)

Author: BolajiOlajide

CHANGELOG.md

@@ -13,14 +13,18 @@ All notable changes to `src-cli` are documented in this file.
 
 ### Added
 
-- Batch Changes: Watchdog that checks for docker responsiveness while running commands has been added. [#898](https://github.com/sourcegraph/src-cli/pull/898)
-
 ### Changed
 
 ### Fixed
 
 ### Removed
 
+## 4.3.0
+
+### Added
+
+- Batch Changes: Watchdog that checks for docker responsiveness while running commands has been added. [#898](https://github.com/sourcegraph/src-cli/pull/898)
+
 ## 4.2.1
 
 ### Added