Fix test failure in debug builds and add NEWS entry for r86908
diff --git a/Misc/NEWS b/Misc/NEWS
index 6d8371c..4598ca7 100644
--- a/Misc/NEWS
+++ b/Misc/NEWS
@@ -46,6 +46,8 @@
 Library
 -------
 
+- Issue #10535: Enable silenced warnings in unittest by default.
+
 - Issue #9873: The URL parsing functions in urllib.parse now accept
   ASCII byte sequences as input in addition to character strings.