Update git submodules

* Update docs/submodules/promise from branch 'master'
  - Merge "Adds a template for the release notes"
  - Adds a template for the release notes

    Change-Id: I4570fb605b8ffdabacdb6b565da9ebec6f728e7d
    Signed-off-by: Gerald Kunzmann <kunzmann@docomolab-euro.com>

diff --git a/docs/submodules/promise b/docs/submodules/promise
index 7b6754d..c0f8f34 160000 (submodule)
--- a/docs/submodules/promise
+++ b/docs/submodules/promise
@@ -1 +1 @@
-Subproject commit 7b6754dfa40dbfae8dc062d405e2200883f7acdc
+Subproject commit c0f8f3487b1782eeb05ce6d0d2c4b8578594e5dd