Update git submodules

* Update docs/submodules/releng from branch 'master'
  - Merge "[baro] Add stable/fraser"
  - [baro] Add stable/fraser

    Change-Id: Ic81f0a707b1a46c65b47251fedc51c8afc8e6d54

diff --git a/docs/submodules/releng b/docs/submodules/releng
index b595b79..4ca316c 160000 (submodule)
--- a/docs/submodules/releng
+++ b/docs/submodules/releng
@@ -1 +1 @@
-Subproject commit b595b798ed0d0698be94c266224e40817cd01993
+Subproject commit 4ca316cdb4c93a1cb843a804e3be00e635964f16