Update git submodules

* Update docs/submodules/sdc.git from branch 'master'
  to 4d8364e7ac25838c0aeabcd89af2e447c30d9426
  - Improved test for ReportManger, ArtifactValidationUtils and Sonar fixes.

    Add new ReportManagerHelper to read files with reports.
    Fixed log.info to print the types of exception in the messages.
    Removed redundant new lines in the report files.

    Issue-ID: SDC-2327
    Signed-off-by: Krystian Kedron <k.kedron@partner.samsung.com>
    Change-Id: If0135f01a05b0936dad681d16e846a6c6560cc80

diff --git a/docs/submodules/sdc.git b/docs/submodules/sdc.git
index cf1372c..4d8364e 160000 (submodule)
--- a/docs/submodules/sdc.git
+++ b/docs/submodules/sdc.git
@@ -1 +1 @@
-Subproject commit cf1372cca6cab85810dfcc7309983ba362e99a29
+Subproject commit 4d8364e7ac25838c0aeabcd89af2e447c30d9426