Update git submodules

* Update docs/submodules/releng from branch 'master'
  - Apex: fixes build directory in upload artifact

    Change-Id: I5d3c5c76159a1bc4b83ef5855ad412962d00fcb6
    Signed-off-by: Tim Rozet <trozet@redhat.com>

diff --git a/docs/submodules/releng b/docs/submodules/releng
index 4f7132a..934ee79 160000 (submodule)
--- a/docs/submodules/releng
+++ b/docs/submodules/releng
@@ -1 +1 @@
-Subproject commit 4f7132ae05d84ea3fb5f3af0a826231b3f00b842
+Subproject commit 934ee79b8a3d36449291794871bfc4f30aa604b7