Update git submodules

* Update docs/submodules/releng from branch 'master'
  to 34948706b7c1262d21ce03f36607124bfe880e60
  - Add podman via Debian container

    Change-Id: Ibcde7e5a505c71ff8f827c23ad6075ae0415feb6
    Signed-off-by: Cédric Ollivier <cedric.ollivier@orange.com>

diff --git a/docs/submodules/releng b/docs/submodules/releng
index 9f33a13..3494870 160000 (submodule)
--- a/docs/submodules/releng
+++ b/docs/submodules/releng
@@ -1 +1 @@
-Subproject commit 9f33a1338bc16da2493c3184c203022d56dab62f
+Subproject commit 34948706b7c1262d21ce03f36607124bfe880e60