Update git submodules

* Update docs/submodules/releng from branch 'master'
  to 827a2f573fb0b91ff14973e8cceae55da83659c7
  - Merge "Create v1.23 branch for Functest Kubernetes"
  - Create v1.23 branch for Functest Kubernetes

    https://kubernetes.io/blog/2021/12/07/kubernetes-1-23-release-announcement/

    Change-Id: Ieedc3677b74d5d362a83b600ad76a6230497eb25
    Signed-off-by: Cédric Ollivier <cedric.ollivier@orange.com>

diff --git a/docs/submodules/releng b/docs/submodules/releng
index 573a52a..827a2f5 160000 (submodule)
--- a/docs/submodules/releng
+++ b/docs/submodules/releng
@@ -1 +1 @@
-Subproject commit 573a52a6062f0ccf8469f3a332ecb1128a703a9d
+Subproject commit 827a2f573fb0b91ff14973e8cceae55da83659c7