Update git submodules

* Update docs/submodules/sdc.git from branch 'master'
  to 4b6ceb618a35aef9125811459146641c6aa5391f
  - Add unit test for TranslationFileCreationErrorBuilder
    
    Issue-ID: SDC-2327
    Signed-off-by: Marcin Kowalski <m.kowalski3@partner.samsung.com>
    Change-Id: Iedb570e14fdf1169da45321d97807aedad2c16d0
    
1 file changed