Update git submodules

* Update docs/submodules/releng from branch 'master'
  - Apex: remove blocking verify jobs per node

    Change-Id: I66e5af8dd11c2797e08c6b370fa1fd717ff57d41
    Signed-off-by: Tim Rozet <trozet@redhat.com>

diff --git a/docs/submodules/releng b/docs/submodules/releng
index b9c0b33..7e56ca1 160000 (submodule)
--- a/docs/submodules/releng
+++ b/docs/submodules/releng
@@ -1 +1 @@
-Subproject commit b9c0b337f2c5d53afcb84d76243f2b329e7b8192
+Subproject commit 7e56ca198fddfca40ea2aeb71c351690a3f57ea7