NEWS: finalize for v255-rc2

Author: bluca

NEWS

@@ -614,7 +614,7 @@ CHANGES WITH 255 in spe:
         Vito Caputo, Warren, Xiaotian Wu, xinpeng wang, Yu Watanabe,
         Zbigniew Jędrzejewski-Szmek, zeroskyx, наб
 
-        — Edinburgh, 2023-11-06
+        — Edinburgh, 2023-11-15
 
 CHANGES WITH 254: