Update git submodules

* Update docs/submodules/apex from branch 'master'
  - build: remove barometer missing deps

    Remove barometer missing dependencies till they are resolved by the barometer
    project.

    Change-Id: Ie09bfd4ef68401dc83bb4208c54386ec1d30ed1f
    Signed-off-by: Maryam Tahhan <maryam.tahhan@intel.com>

diff --git a/docs/submodules/apex b/docs/submodules/apex
index 5f19f12..b375c4b 160000 (submodule)
--- a/docs/submodules/apex
+++ b/docs/submodules/apex
@@ -1 +1 @@
-Subproject commit 5f19f129420ceb97c08641fc945335c0ef1b1083
+Subproject commit b375c4bfb86367c039e0e1f7c507d086def8a790