Update git submodules

* Update docs/submodules/so.git from branch 'master'
  to 720deec8b23c150515ef39d2176b411a625e9e51
  - Merge "Move String literal to left-hand side of equals"
  - Move String literal to left-hand side of equals

    Move String literal to left-hand side of equals SniroValidator class

    Issue-ID: SO-1490

    Change-Id: Ib9d1ba94908f92cc46cf5a8177e3808327398600
    Signed-off-by: Sindhuri.A <arcot.sindhuri@huawei.com>

diff --git a/docs/submodules/so.git b/docs/submodules/so.git
index 32bea69..720deec 160000 (submodule)
--- a/docs/submodules/so.git
+++ b/docs/submodules/so.git
@@ -1 +1 @@
-Subproject commit 32bea69accd129c893d50a6896152ca806db0112
+Subproject commit 720deec8b23c150515ef39d2176b411a625e9e51