Issue #23004: mock_open() now reads binary data correctly when the type of read_data is bytes.

Initial patch by Aaron Hill.
diff --git a/NEWS b/NEWS
index f3f0086..9c0ff3c 100644
--- a/NEWS
+++ b/NEWS
@@ -1,6 +1,9 @@
 Library
 -------
 
+- Issue #23004: mock_open() now reads binary data correctly when the type of
+  read_data is bytes.  Initial patch by Aaron Hill.
+
 - Issue #21750: mock_open.read_data can now be read from each instance, as it
   could in Python 3.3.