Update notes for submitted changes

* Bridging: Use a ref to bridge_channel's channel to prevent crash.

51/4b1d6b494294c56afb7849947b12af9d6e064a

@@ -0,0 +1,9 @@
+Code-Review+1: Joshua Colp <jcolp@sangoma.com>
+Code-Review+2: Kevin Harwell <kharwell@digium.com>
+Code-Review+1: George Joseph <gjoseph@digium.com>
+Verified+2: Friendly Automation
+Submitted-by: Friendly Automation
+Submitted-at: Wed, 09 Sep 2020 18:09:35 -0500
+Reviewed-on: https://gerrit.asterisk.org/c/asterisk/+/14885
+Project: asterisk
+Branch: refs/heads/13