Update git submodules

* Update docs/submodules/sdc/sdc-workflow-designer.git from branch 'elalto'
  to ef6d145a0c2e1ea8d519e81e364facecd6194c1a
  - Update pom version

    Update pom version to 1.5.3 so that we can release a new Elalto

    Issue-ID: SDC-3162
    Signed-off-by: sebdet <sebastien.determe@intl.att.com>
    Change-Id: I91dccb9d0b156e41b93687b0e9351988b1f489a8

diff --git a/docs/submodules/sdc/sdc-workflow-designer.git b/docs/submodules/sdc/sdc-workflow-designer.git
index 3a04d8d..ef6d145 160000 (submodule)
--- a/docs/submodules/sdc/sdc-workflow-designer.git
+++ b/docs/submodules/sdc/sdc-workflow-designer.git
@@ -1 +1 @@
-Subproject commit 3a04d8d59b952f1fb776d3b300b0e1efc24e07e3
+Subproject commit ef6d145a0c2e1ea8d519e81e364facecd6194c1a