Update git submodules

* Update docs/submodules/releng from branch 'master'
  to 3f54e4b0b027c934db356a2fd344c161e858bbcb
  - Merge "Create new v1.26 Functest K8s branch"
  - Create new v1.26 Functest K8s branch

    Change-Id: I9f5225dbfd0661da96186068ae3a4f7c6ad4968e
    Signed-off-by: Cédric Ollivier <cedric.ollivier@orange.com>

diff --git a/docs/submodules/releng b/docs/submodules/releng
index 07bd87c..3f54e4b 160000 (submodule)
--- a/docs/submodules/releng
+++ b/docs/submodules/releng
@@ -1 +1 @@
-Subproject commit 07bd87c295d87906d61dd5985311e0f01aaf67d6
+Subproject commit 3f54e4b0b027c934db356a2fd344c161e858bbcb