Update git submodules

* Update docs/submodules/releng from branch 'master'
  - Apex: fixes writing sha info into properties

    Change-Id: Idc5ca86dbc51d83860f26244a4ed7d88015552d0
    Signed-off-by: Tim Rozet <trozet@redhat.com>

diff --git a/docs/submodules/releng b/docs/submodules/releng
index 32d7d9e..ac3f798 160000 (submodule)
--- a/docs/submodules/releng
+++ b/docs/submodules/releng
@@ -1 +1 @@
-Subproject commit 32d7d9ee6e7ce8f2ee63b700133b679466976c3d
+Subproject commit ac3f798b30ba5d8dcd13b41b309c530dd68ff520