Update git submodules

* Update docs/submodules/sdc.git from branch 'master'
  to 1570565c12f70cb7dd5bcc29822b607ce103e4fc
  - Remove keyname 'required' from Schema definition
    
    The Schema definitions does not have keyname 'required'. The keyname 'required' is a TOSCA property definition.
    
    Issue-ID: SDC-2866
    Signed-off-by: aribeiro <anderson.ribeiro@est.tech>
    Change-Id: I0a827d30c8790ec63c20a9da6cd0758eb024c491
    
1 file changed