Update git submodules

* Update docs/submodules/sdc.git from branch 'elalto'
  to 09fb659de8b346fdb2b3a894b39319e445145f43
  - 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: Ia337de253a921e6854eed61e078a7940ac8d6154

  - Update P12 certif

    Update P12 for El Alto maintenance release

    Issue-ID: SDC-3157
    Signed-off-by: sebdet <sebastien.determe@intl.att.com>
    Change-Id: I0151218c4fa0976174f38197716bc0bbc629a5ed

diff --git a/docs/submodules/sdc.git b/docs/submodules/sdc.git
index 79a9ed1..09fb659 160000 (submodule)
--- a/docs/submodules/sdc.git
+++ b/docs/submodules/sdc.git
@@ -1 +1 @@
-Subproject commit 79a9ed10ae40065b9288b7b3fa90aa25024bcbb4
+Subproject commit 09fb659de8b346fdb2b3a894b39319e445145f43