Prep CHANGELOG for v4.2.4 (#555)

* Prep changelog for v4.2.4

* Update CHANGELOG.md

Author: tunetheweb

CHANGELOG.md

@@ -2,6 +2,10 @@
 
 See the [upgrading to v4](/docs/upgrading-to-v4.md) documentation for a complete list of all API changes in version 4.
 
+### v4.2.4 (2024-10-22)
+
+- Fix memory leak in registering new event listeners on every keydown and click ([#554](https://github.com/GoogleChrome/web-vitals/pull/554))
+
 ### v4.2.3 (2024-08-06)
 
 - Fix missing LoAF entries in INP attribution ([#512](https://github.com/GoogleChrome/web-vitals/pull/512))