Update git submodules

* Update masakari-monitors from branch 'master'
  to 20f4ca3de4d242a4727d812dd562d7451a4b9058
  - Merge "reno: Update master for unmaintained/zed"
  - reno: Update master for unmaintained/zed

    Update the zed release notes configuration to build from
    unmaintained/zed.

    Change-Id: Iaddf34552a1d6c427fd718747adcf47b5c57ca95

diff --git a/masakari-monitors b/masakari-monitors
index 09637fe48f88b8f72ae779e2fb0cc538a77abb1b..20f4ca3de4d242a4727d812dd562d7451a4b9058 160000 (submodule)
--- a/masakari-monitors
+++ b/masakari-monitors
@@ -1 +1 @@
-Subproject commit 09637fe48f88b8f72ae779e2fb0cc538a77abb1b
+Subproject commit 20f4ca3de4d242a4727d812dd562d7451a4b9058