Update git submodules

* Update docs/submodules/so.git from branch 'master'
  to 8fee4fd7a88ec025e142bafa50cc7e0dc8610b0d
  - Merge "Added null check for executions variable to prevent a static analyzer warning"
  - Added null check for executions variable to
    prevent a static analyzer warning

    Issue-ID: SO-1841
    Signed-off-by: Oleksandr Moliavko <o.moliavko@samsung.com>
    Change-Id: I6c10240048452c242ab3f513a6e13e81baedbc5f

diff --git a/docs/submodules/so.git b/docs/submodules/so.git
index be8ac58..8fee4fd 160000 (submodule)
--- a/docs/submodules/so.git
+++ b/docs/submodules/so.git
@@ -1 +1 @@
-Subproject commit be8ac5839bc9a4c30d396678ef1d352518c6ccd0
+Subproject commit 8fee4fd7a88ec025e142bafa50cc7e0dc8610b0d