Update git submodules

* Update docs/submodules/fuel from branch 'stable/fraser'
  - [submodule] Bump Pharos

    Change-Id: Ib5f7a9d7874704b11b10cdc1eefaae19de2a629e
    Signed-off-by: Cristina Pauna <cristina.pauna@enea.com>
    (cherry picked from commit ef46d8af46c861bdff5ba835bd89b97b334ea45c)

diff --git a/docs/submodules/fuel b/docs/submodules/fuel
index 0c8eca1..ad10ff6 160000 (submodule)
--- a/docs/submodules/fuel
+++ b/docs/submodules/fuel
@@ -1 +1 @@
-Subproject commit 0c8eca1990726b3dfcf0572aedda5cf3f62a1f49
+Subproject commit ad10ff601c29960542dae34ce65197c94d2172c0