Update 4.x changelog for 3.11.4 release (#1691)

Author: hhughes

changelog/README.md

@@ -632,6 +632,11 @@ changelog](https://docs.datastax.com/en/developer/java-driver-dse/latest/changel
 - [bug] JAVA-1499: Wait for load balancing policy at cluster initialization
 - [new feature] JAVA-1495: Add prepared statements
 
+## 3.11.4
+- [improvement] JAVA-3079: Upgrade Netty to 4.1.94, 3.x edition
+- [improvement] JAVA-3082: Fix maven build for Apple-silicon
+- [improvement] PR 1671: Fix LatencyAwarePolicy scale docstring
+
 ## 3.11.3
 
 - [improvement] JAVA-3023: Upgrade Netty to 4.1.77, 3.x edition