Update git submodules

* Update docs/submodules/oom/offline-installer.git from branch 'master'
  to f842b36613c91f86dd371b590e048e5c4e510f34
  - update for missing nginx tarfile
    
    This update adds an entry to the docker_images lists file to ensure
    it is saved as a tar file and available for processing in the
    "Prepare infra related images to infra folder" section.
    
    Change-Id: I293144daa96b3c579443a2e76a407ea04821dce7
    Issue-ID: OOM-1738
    Signed-off-by: eronkeo <ronan.keogh@est.tech>
    
1 file changed