Update news

Author: cpsievert

NEWS.md

@@ -12,6 +12,7 @@
 
 * Closed #2337: Creating a new `event_data()` handler no longer causes a spurious reactive update of existing `event_data()`s. (#2339)
 * Closed #2376: Removes errant boxmode warning for grouped boxplot. (#2396)
+* Closed #2392: Trivial warning about RColorBrewer minimal n value is no longer thrown (#1999) 
 
 # 4.10.4