Update changelog

Author: markushi

CHANGELOG.md

@@ -1,5 +1,12 @@
 # Changelog
 
+## Unreleased
+
+### Behavioural Changes
+
+- The user ip-address is now only set to `"{{auto}}"` if sendDefaultPii is enabled ([#4071](https://github.com/getsentry/sentry-java/pull/4071))
+    - This change gives you control over IP address collection directly on the client
+
 ## 7.20.0
 
 ### Features