Update git submodules

* Update docs/submodules/apex from branch 'master'
  - Fix rocky container preparation

    Branch was being passed with the 'stable' prefix which was breaking the
    docker URL.

    Change-Id: I802492d407bc18ec2b47212edfe4bb4fde13002a
    Signed-off-by: Tim Rozet <trozet@redhat.com>

diff --git a/docs/submodules/apex b/docs/submodules/apex
index be1a60f..1486696 160000 (submodule)
--- a/docs/submodules/apex
+++ b/docs/submodules/apex
@@ -1 +1 @@
-Subproject commit be1a60fcde0c122266e8c074df729a1be75f5607
+Subproject commit 1486696939e9b8d42f6f96bc5adb85849f675413