Update changelog

CHANGELOG.md

@@ -1,5 +1,16 @@
 ## WLED changelog
 
+#### Build 2309050
+-   Effect blending (#3311) (finally efect transitions!)
+    *WARNING*: May not work well with ESP8266 with plenty of segments or usermods (low RAM condition)!!!
+-   Added receive and send sync groups to JSON API (#3317) (you can change sync groups using preset)
+-   Internal temperature usermod (#3246)
+-   MQTT server and topic length overrides (#3354) (new build flags)
+-   Animated Staircase usermod enhancement (#3348) (on/off toggle/relay control)
+-   Added local time info to Info page (#3351)
+-   New effect: Linear bounce (#1039)
+-   Various bug fixes and enhancements.
+
 #### Build 2308110
 -   Release of WLED beta version 0.14.0-b4 "Hoshi"
 -   Reset effect data immediately upon mode change