Update git submodules

* Update docs/submodules/sdc.git from branch 'master'
  to f34e28d521b71be501dc85e75c5efa411c3194f1
  - Validate artifacts signature in SOL004 package
    
    Change-Id: Ib048f4501fd8a81cdf11fab19f149350011f772e
    Issue-ID: SDC-2632
    Signed-off-by: andre.schmid <andre.schmid@est.tech>
    
1 file changed