Update git submodules

* Update docs/submodules/so.git from branch 'master'
  to a1f955a0b3c9e406786ba429ee08a22c95a9b793
  - Merge "Fix sonar issues in MSOCoreBPMN"
  - Fix sonar issues in MSOCoreBPMN

    Either log or rethrow this exception
    Make "serviceParams" transient or serializable
    Make "extSystemErrorSource" transient or serializable

    Issue-ID: SO-1841
    Change-Id: If752c7898a0934212d425b1c80b8d2ee34098ad3
    Signed-off-by: Parshad Patel <pars.patel@samsung.com>

diff --git a/docs/submodules/so.git b/docs/submodules/so.git
index 150f8b2..a1f955a 160000 (submodule)
--- a/docs/submodules/so.git
+++ b/docs/submodules/so.git
@@ -1 +1 @@
-Subproject commit 150f8b2320f0ea3a40d0e310cfaab66b54fd3d2b
+Subproject commit a1f955a0b3c9e406786ba429ee08a22c95a9b793