Update git submodules

* Update docs/submodules/clamp.git from branch 'master'
  to 2b4c5c64e5db661e407bf2aab8e6522f2a37fbd9
  - Document fixed OJSI-128 vulnerability
    
    Issue-ID: OJSI-128
    Signed-off-by: Krzysztof Opasiak <k.opasiak@samsung.com>
    Change-Id: Iea1134d2645ba53de63f08aac975abb138b442fe
    
1 file changed