Allow multiple setup hooks in packaging’s setup.cfg files (#12240).

Original patch by Erik Bray.
diff --git a/Misc/NEWS b/Misc/NEWS
index 5b01308..47f3b0e 100644
--- a/Misc/NEWS
+++ b/Misc/NEWS
@@ -187,6 +187,9 @@
 Library
 -------
 
+- Issue #12240: Allow multiple setup hooks in packaging's setup.cfg files.
+  Original patch by Erik Bray.
+
 - Issue #11595: Fix assorted bugs in packaging.util.cfg_to_args, a
   compatibility helper for the distutils-packaging transition.  Original patch
   by Erik Bray.