Update git submodules

* Update docs/submodules/music.git from branch 'master'
  to c905534f0165b029ad70554638cbd1f13814e879
  - Release 3.2.39 Docker image
    
    Issue-ID: MUSIC-582
    Signed-off-by: Tschaen, Brendan <ctschaen@att.com>
    Change-Id: I819b06c4a6a539a8c316e3d6f0019dbf67079a32
    
1 file changed