Update git submodules

* Update docs/submodules/armband from branch 'stable/fraser'
  - u/fuel: Bump for keyserver patch rebase (3)

    Change-Id: I4c5f73a5e8e113933b06ba1e92707fa622e32ef3
    Signed-off-by: Alexandru Avadanii <Alexandru.Avadanii@enea.com>

diff --git a/docs/submodules/armband b/docs/submodules/armband
index 3aea74f..750dbdc 160000 (submodule)
--- a/docs/submodules/armband
+++ b/docs/submodules/armband
@@ -1 +1 @@
-Subproject commit 3aea74f31fb6d1ea9d000aa578e9fdc7ec482a3d
+Subproject commit 750dbdcd229862c3f6d5347f747d7cf27c10c42c