NEWS in clogger-2.3.0 vs NEWS in clogger-2.3.1

@@ -1,4 +1,12 @@
+=== clogger 2.3.1 / 2021-05-25 23:39 UTC
+
+  This release fixes compatibility with GC.compact on Ruby 3.x.
+  Thanks to Ngan Pham for the patch and Aaron Patterson for the
+  feedback for the (obsolete) kgio RubyGem:
+
+    https://yhbt.net/kgio-public/[e-mail]/T/
+
 === clogger 2.3.0 - $request_time{POWER,PRECISION} support / 2020-08-10 23:01 UTC
 
   The $request_time can now be multiplied by a power-of-10,
   allowing up to nanosecond resolution without decimals.