Update git submodules

* Update docs/submodules/releng from branch 'master'
  to 94af9f4a754a396ad7b3c3ecfd2c01ccceb226a8
  - Verify Xtesting containers via trivy

    Change-Id: I8601f182ab650837bde2ddce1f8b302310cfa25a
    Signed-off-by: Cédric Ollivier <cedric.ollivier@orange.com>

diff --git a/docs/submodules/releng b/docs/submodules/releng
index 3f2c62e..94af9f4 160000 (submodule)
--- a/docs/submodules/releng
+++ b/docs/submodules/releng
@@ -1 +1 @@
-Subproject commit 3f2c62e649c923e69d3b08dca5d4e7147a432803
+Subproject commit 94af9f4a754a396ad7b3c3ecfd2c01ccceb226a8