Update git submodules

* Update docs/submodules/so.git from branch 'master'
  to 7c843d5caf2e85b0b62325a782d614757767cf2f
  - Merge "fix sonar blocker try-with-resources"
  - fix sonar blocker try-with-resources

    BpmnInstaller: use try-with-resources in containsWorkflows
    remove unnecessary type casting to ZipEntry
    BpmnInstallerTest: add tests for containsWorkflows
    fix test for installBpmn (was silently failing with file not found)

    Change-Id: I3122bcd19204bf498fe1a9b10630076e2df9d70b
    Issue-ID: SO-1516
    Signed-off-by: k.kazak <k.kazak@samsung.com>

diff --git a/docs/submodules/so.git b/docs/submodules/so.git
index f8842db..7c843d5 160000 (submodule)
--- a/docs/submodules/so.git
+++ b/docs/submodules/so.git
@@ -1 +1 @@
-Subproject commit f8842dbd4065e0b90d4ed0d4af9e4cc72ca218dd
+Subproject commit 7c843d5caf2e85b0b62325a782d614757767cf2f