Update git submodules

* Update docs/submodules/releng from branch 'master'
  - Merge "Specify CI jobs time intervals for armband"
  - Specify CI jobs time intervals for armband

    Since there is only one CI pod available for armband at the moment,
    we instruct CI to run only one job per day. Four jobs for master
    branch and 3 for stable branch.

    Change-Id: I645a98d922c00b2237cb5aeeb280d00ecdf0e288
    Signed-off-by: Charalampos Kominos <Charalampos.Kominos@enea.com>

diff --git a/docs/submodules/releng b/docs/submodules/releng
index c771f89..a45c528 160000 (submodule)
--- a/docs/submodules/releng
+++ b/docs/submodules/releng
@@ -1 +1 @@
-Subproject commit c771f89e9cc24fd1b6cf5f775086acb5c3841e06
+Subproject commit a45c528ebfd14095b303270231eb86033258ea65