Update notes for submitted changes

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

6f/0b436185707b60975fdb4981d59b5423d919dc

@@ -0,0 +1,9 @@
+Code-Review+1: George Joseph <gjoseph@digium.com>
+Code-Review+1: Joshua Colp <jcolp@sangoma.com>
+Code-Review+2: Kevin Harwell <kharwell@digium.com>
+Verified+2: Joshua Colp <jcolp@sangoma.com>
+Submitted-by: Joshua Colp <jcolp@sangoma.com>
+Submitted-at: Thu, 10 Sep 2020 05:56:13 -0500
+Reviewed-on: https://gerrit.asterisk.org/c/asterisk/+/14872
+Project: asterisk
+Branch: refs/heads/certified/13.21