Add a whatsnew entry.

Author: gpshead

Doc/whatsnew/3.14.rst

@@ -352,6 +352,17 @@ json
   (Contributed by Trey Hunner in :gh:`122873`.)
 
 
+multiprocessing
+---------------
+
+* :mod:`multiprocessing`'s ``"forkserver"`` start method gains authentication
+  on its control sockets so that it isn't solely reliant on filesystem
+  permissions to control what other processes can cause the fork server to
+  spawn workers and run code.
+  This improves the security story behind gh:`97514`.
+  (Contributed by Gregory P. Smith.)
+
+
 operator
 --------