Update git submodules

* Update docs/submodules/apex from branch 'master'
  - Merge "Skip introspection for aarch64 BM deployments"
  - Skip introspection for aarch64 BM deployments

    Change-Id: I630e90065f9cc76ef42ca9b23aea920c2493b53f
    Signed-off-by: Dan Radez <dradez@redhat.com>

diff --git a/docs/submodules/apex b/docs/submodules/apex
index c864613..50214cb 160000 (submodule)
--- a/docs/submodules/apex
+++ b/docs/submodules/apex
@@ -1 +1 @@
-Subproject commit c864613222ed1b85306deba7991df1a89b56c897
+Subproject commit 50214cbfb2a815c3b397810bf34c94e50cb68801