Update git submodules

* Update docs/submodules/releng from branch 'master'
  - Merge "Remove Artifacts JSON Job"
  - Remove Artifacts JSON Job

    As far as I know the site that consumed this resource was never actually
    published, and given this runs frequently on master, removing it should
    save resources.

    Change-Id: I383fcffcef98e0e12a38d15dcb1204419283b833
    Signed-off-by: Trevor Bramwell <tbramwell@linuxfoundation.org>

diff --git a/docs/submodules/releng b/docs/submodules/releng
index 1ab7d1d..b314f03 160000 (submodule)
--- a/docs/submodules/releng
+++ b/docs/submodules/releng
@@ -1 +1 @@
-Subproject commit 1ab7d1d740c337187050b37ef78bb58a57048b39
+Subproject commit b314f036cc89c9266a40383483ce5682ce4b0eff