Merge from 3.2 (Ignore X-Antivirus headers in test_nntplib)
diff --git a/Misc/NEWS b/Misc/NEWS
index 90661af..c6ba9dd 100644
--- a/Misc/NEWS
+++ b/Misc/NEWS
@@ -134,6 +134,9 @@
 Tests
 -----
 
+- test_nntplib now tolerates being run from behind NNTP gateways that add
+  "X-Antivirus" headers to articles
+
 - Issue #15043: test_gdb is now skipped entirely if gdb security settings
   block loading of the gdb hooks