Update notes for submitted changes

* app_confbridge: Plug ref leak of bridge channel with send_events

0f/e63c2f87b6fbd85838000d4927c9c4688560a2

@@ -0,0 +1,9 @@
+Code-Review+1: Joshua Colp <jcolp@sangoma.com>
+Code-Review+1: Benjamin Keith Ford <bford@digium.com>
+Code-Review+2: George Joseph <gjoseph@digium.com>
+Verified+2: George Joseph <gjoseph@digium.com>
+Submitted-by: George Joseph <gjoseph@digium.com>
+Submitted-at: Wed, 10 Jun 2020 14:00:17 -0500
+Reviewed-on: https://gerrit.asterisk.org/c/asterisk/+/14521
+Project: asterisk
+Branch: refs/heads/certified/16.8