Update git submodules

* Update docs/submodules/releng from branch 'master'
  to 0ce746d726073145a9c623a4cc2d922b07e2f5e6
  - Prepare Xtesting 2023.2

    Change-Id: Ia6ec12bd6fe6c31ff75a21fc456c6ce57cd75fad
    Signed-off-by: Cédric Ollivier <cedric.ollivier@orange.com>

diff --git a/docs/submodules/releng b/docs/submodules/releng
index 0e774da..0ce746d 160000 (submodule)
--- a/docs/submodules/releng
+++ b/docs/submodules/releng
@@ -1 +1 @@
-Subproject commit 0e774dab957306333da6ff661266927edecbd711
+Subproject commit 0ce746d726073145a9c623a4cc2d922b07e2f5e6