Update notes for submitted changes

* STIR/SHAKEN: OPENSSL_free serial hex from openssl.

05/f7bc9c66290bffcfce5f63af4b818db7e6af4f

@@ -0,0 +1,9 @@
+Code-Review+1: Joshua Colp <jcolp@sangoma.com>
+Code-Review+1: Kevin Harwell <kharwell@digium.com>
+Code-Review+2: Benjamin Keith Ford <bford@digium.com>
+Verified+2: Benjamin Keith Ford <bford@digium.com>
+Submitted-by: Benjamin Keith Ford <bford@digium.com>
+Submitted-at: Tue, 11 May 2021 14:38:19 -0500
+Reviewed-on: https://gerrit.asterisk.org/c/asterisk/+/15883
+Project: asterisk
+Branch: refs/heads/master