Update git submodules

* Update docs/submodules/releng from branch 'master'
  - Merge "jjb: xci: bifrost-verify-jobs: Increase build-timeout value"
  - jjb: xci: bifrost-verify-jobs: Increase build-timeout value

    The bifrost jobs could run in parallel with the XCI ones so it may take
    longer than 90 minutes to complete. Lets double the timeout value in
    order to ensure that we don't fail due to a Jenkins timeout.

    Change-Id: I53a442f434d839d891bf03e41ba1a6a4459fd878
    Signed-off-by: Markos Chandras <mchandras@suse.de>

diff --git a/docs/submodules/releng b/docs/submodules/releng
index d4851ff..437eb58 160000 (submodule)
--- a/docs/submodules/releng
+++ b/docs/submodules/releng
@@ -1 +1 @@
-Subproject commit d4851ff5ac133c2672dfe1ed806a57c1c0abaa63
+Subproject commit 437eb58c06f204baabdb3abc47c1956794b649e0