Update git submodules

* Update docs/submodules/releng from branch 'master'
  to 40c354406e75bb7b03044f9b8e9e72196cb43f54
  - Merge "Build Functest 2023.1 VM image"
  - Build Functest 2023.1 VM image

    Change-Id: Icfd2d873f1e0d81dcb870c318ac2b9b3a998e110
    Signed-off-by: Cédric Ollivier <cedric.ollivier@orange.com>

diff --git a/docs/submodules/releng b/docs/submodules/releng
index c84463c..40c3544 160000 (submodule)
--- a/docs/submodules/releng
+++ b/docs/submodules/releng
@@ -1 +1 @@
-Subproject commit c84463cdf20e27deba830418a7f2ff1b90a4c627
+Subproject commit 40c354406e75bb7b03044f9b8e9e72196cb43f54