Update git submodules

* Update docs/submodules/apex from branch 'master'
  - Merge "Adds apex owned scenario release notes"
  - Adds apex owned scenario release notes

    Change-Id: Ia7b50b99b82a01d347ba673e354d80cbb65e608f
    Signed-off-by: Tim Rozet <trozet@redhat.com>

diff --git a/docs/submodules/apex b/docs/submodules/apex
index 9881eac..2a1c559 160000 (submodule)
--- a/docs/submodules/apex
+++ b/docs/submodules/apex
@@ -1 +1 @@
-Subproject commit 9881eac1a9b1cc32ba7239e3d9189df3c11784ac
+Subproject commit 2a1c5597cf4f3c018b5064fded8cdb5637f98e68