Update git submodules

* Update docs/submodules/releng from branch 'master'
  - Apex: remove leftover tmp dirs

    Change-Id: I4a1da6ba1efe2b704f0109f63817021435d283b8
    Signed-off-by: Tim Rozet <trozet@redhat.com>

diff --git a/docs/submodules/releng b/docs/submodules/releng
index 916a486..b822e4d 160000 (submodule)
--- a/docs/submodules/releng
+++ b/docs/submodules/releng
@@ -1 +1 @@
-Subproject commit 916a486f391728e1e45a4ce4ea8bf5f584e1079b
+Subproject commit b822e4db9735b442e7a259b1aba00c0c69939f77