Update git submodules

* Update docs/submodules/so.git from branch 'master'
  to 0966d538f7f04dbb99e5028e09057a3e8f866cab
  - Merge "Distribution fails when no user input required in design"
  - Distribution fails when no user input required in design

    When we distribute a design from SDC and design does
    not have any user input in properties, then distribution
    fails with error ArrayIndexOutOfBoundException

    Issue-ID: SO-2279
    Signed-off-by: sarada prasad sahoo <sarada.prasad.sahoo@huawei.com>
    Change-Id: I47bd724e25d81befc09ec452aa63d8519c927520

diff --git a/docs/submodules/so.git b/docs/submodules/so.git
index 6cd85cc..0966d53 160000 (submodule)
--- a/docs/submodules/so.git
+++ b/docs/submodules/so.git
@@ -1 +1 @@
-Subproject commit 6cd85ccdda04348cda55e6710907ed72c9431352
+Subproject commit 0966d538f7f04dbb99e5028e09057a3e8f866cab