Update git submodules

* Update docs/submodules/joid from branch 'stable/danube'
  - fix the k8 core bundle and deployment failed.

    Change-Id: I65cf597bbc4c68bd80d26ed0d8729127a4e30863
    Signed-off-by: Narinder Gupta <narinder.gupta@canonical.com>
    (cherry picked from commit c7580ac7da94f6db7c16cd869d07da8be136e39e)

diff --git a/docs/submodules/joid b/docs/submodules/joid
index dcb7c4a..503ae12 160000 (submodule)
--- a/docs/submodules/joid
+++ b/docs/submodules/joid
@@ -1 +1 @@
-Subproject commit dcb7c4a04bbe73bcd7ce7b373cf7e2d3bb6c3055
+Subproject commit 503ae122dde4533b09be89d895160f2ae0a9c7b6