Update git submodules

Update git submodules

* Update docs/submodules/releng from branch 'master'
  - Merge "snaps: Disable snaps verify jobs to prevent jobs queueing up"
  - snaps: Disable snaps verify jobs to prevent jobs queueing up

    The POD, intel-pod20, where the slave was located doesn't exist
    anymore so we have no possibility to run snaps-verify jobs for
    the timebeing.

    This will be looked into once we have a new slave setup.

    Change-Id: Ib46ccf160cd6895aa65d6a136afeedd2f7300335
    Signed-off-by: Fatih Degirmenci <fdegir@gmail.com>