Update git submodules

* Update oslotest from branch 'master'
  to 06c728cb01df5bd0773f93f37311f846b6928d32
  - typing: Add initial types

    Signed-off-by: Stephen Finucane <stephenfin@redhat.com>
    Change-Id: I84978817ec0c18bc6274f6a60b877753a35100c4

diff --git a/oslotest b/oslotest
index ae43119a46eb33df6c6d1d64cae00f438d0233b4..06c728cb01df5bd0773f93f37311f846b6928d32 160000 (submodule)
--- a/oslotest
+++ b/oslotest
@@ -1 +1 @@
-Subproject commit ae43119a46eb33df6c6d1d64cae00f438d0233b4
+Subproject commit 06c728cb01df5bd0773f93f37311f846b6928d32