Update git submodules

* Update docs/submodules/releng from branch 'master'
  - Apex: Fix resources/images directory usage with deploy

    Change-Id: If50ad310049edca687da8e0acf412a7e1eacd2b6
    Signed-off-by: Tim Rozet <trozet@redhat.com>

diff --git a/docs/submodules/releng b/docs/submodules/releng
index 13e6cf7..d29c3e4 160000 (submodule)
--- a/docs/submodules/releng
+++ b/docs/submodules/releng
@@ -1 +1 @@
-Subproject commit 13e6cf7b998848aca31c0a78329706c83e48e468
+Subproject commit d29c3e495aee81b96f653b6a4b5ee72a9bf33976