feat: update changelog of onixbyte toolbox

Author: zihluwang

src/projects/onixbyte-toolbox/changelog.md

@@ -1,5 +1,12 @@
 # Changelog
 
+## v2.4.0 (17 Jun 2025)
+
+- feat: remove `ReflectMapUtil`
+- refactor: remove `simple-serial`
+- refactor: remove `simple-jwt` in gradle settings
+- refactor: remove `devkit-core`
+
 ## v2.3.0 (12 Jun 2025)
 
 - feat: deprecate reflect map util by @siujamo in #67