Update git submodules

* Update docs/submodules/apex from branch 'master'
  - Adds missing rocky csit file

    File was missing during python package install.

    Change-Id: Icd8c22d45cac807ba5e5995fa0efea690e615cde
    Signed-off-by: Tim Rozet <trozet@redhat.com>

diff --git a/docs/submodules/apex b/docs/submodules/apex
index a169531..cec64aa 160000 (submodule)
--- a/docs/submodules/apex
+++ b/docs/submodules/apex
@@ -1 +1 @@
-Subproject commit a16953172cca0026496ab2002f23e8ed1b709c5d
+Subproject commit cec64aa45b75141d317f259a4faa51ebe53cc9a0