Update git submodules

* Update docs/submodules/so.git from branch 'master'
  to 1a6cac12afd643b248e271651be69c0ed4b7497f
  - Merge "Fixed major Sonar issues in ServicePluginFactory"
  - Fixed major Sonar issues in ServicePluginFactory

    Removed not used variable.
    Removed unnecessary castings.
    Cleaned diamond operators.
    Removed commented out block of code.

    Change-Id: I0adca822f6dcb9efaa1ea96c9ff9092a7a2baa84
    Issue-ID: SO-1552
    Signed-off-by: Robert Bogacki <r.bogacki@samsung.com>

diff --git a/docs/submodules/so.git b/docs/submodules/so.git
index b506a30..1a6cac1 160000 (submodule)
--- a/docs/submodules/so.git
+++ b/docs/submodules/so.git
@@ -1 +1 @@
-Subproject commit b506a30ff5cf93a294995982ace7e1326764a713
+Subproject commit 1a6cac12afd643b248e271651be69c0ed4b7497f