Update git submodules

* Update docs/submodules/releng from branch 'master'
  - Merge "Handle error in front-end"
  - Handle error in front-end

    Handle the error and show appropriate message,
    without showing the entire error to the users

    Change-Id: Ib5213190efc1e87d56a7329a4572b525a5e16a12
    Signed-off-by: thuva4 <tharma.thuva@gmail.com>

diff --git a/docs/submodules/releng b/docs/submodules/releng
index e7b945f..c135fe6 160000 (submodule)
--- a/docs/submodules/releng
+++ b/docs/submodules/releng
@@ -1 +1 @@
-Subproject commit e7b945ff720d449112d73291ff9660d27b2f3183
+Subproject commit c135fe6acd184633e34fa6235faa43e4c581dcc9