Update git submodules

* Update docs/submodules/aaf/authz.git from branch 'master'
  to 083a7eb21620467ae1f7d5ba9341e12f75f9cc41
  - minor 2.1.20 changes
    Update versions to 2.1.20
    
    Issue-ID: AAF-1081
    Signed-off-by: Instrumental <jgonap@stl.gathman.org>
    Change-Id: I1a8706d87f7aceffcc96980cebea6722d20cf11e
    
1 file changed