Update git submodules

* Update docs/submodules/releng from branch 'master'
  - Switch Builder for Weekly CI Security Scanning

    Instead of running these specifically on ericsson-build3, we target them
    to run on any of the build servers since the job just runs a docker
    container.

    Change-Id: Ia05adb20bcb84a0a2a187c81ef25b9dcbc99e020
    Signed-off-by: Trevor Bramwell <tbramwell@linuxfoundation.org>

diff --git a/docs/submodules/releng b/docs/submodules/releng
index 8f2f47d..fd1218e 160000 (submodule)
--- a/docs/submodules/releng
+++ b/docs/submodules/releng
@@ -1 +1 @@
-Subproject commit 8f2f47dc7082d861621523e6bd7890a1778260ec
+Subproject commit fd1218e578d0eefd8ea89b998380f98788d991bf