Update git submodules

* Update docs/submodules/releng-xci from branch 'master'
  - Merge "SHA bump for bifrost"
  - SHA bump for bifrost

    We need it for baremetal support in opensuse:

    https://github.com/openstack/bifrost/commit/0f605cd723a68e2c2bb9b30a15a08e5aba777bd5

    We move all related repos from Rocky to master (problems if we SHA bump ironic, etc in
    Rocky while Bifrost in master)

    Change-Id: Icf0dd58c6fc6cc8f221d37a6ed3f3746f6577716
    Signed-off-by: Manuel Buil <mbuil@suse.com>

diff --git a/docs/submodules/releng-xci b/docs/submodules/releng-xci
index dba57fa..fa20640 160000 (submodule)
--- a/docs/submodules/releng-xci
+++ b/docs/submodules/releng-xci
@@ -1 +1 @@
-Subproject commit dba57fa5862e40cd005a0acd4679530a46c85d73
+Subproject commit fa206409872d91bb5c833896357b66a15a39a18a