Update git submodules

* Update docs/submodules/sdc.git from branch 'master'
  to 722eed1c46361a2d8136f1fac528a96749f5dbbd
  - Remove call to `get` on Optional variables
    
    - Made multiple variables Optional
    
    Issue-ID: SDC-2991
    Signed-off-by: Chris Andre <chris.andre@yoppworks.com>
    Change-Id: If3dbfd37e933d10698ad1a93b6762c84e30f69b8
    
diff --git a/docs/submodules/sdc.git b/docs/submodules/sdc.git
index 908793f..722eed1 160000
--- a/docs/submodules/sdc.git
+++ b/docs/submodules/sdc.git
@@ -1 +1 @@
-Subproject commit 908793f04e9a595734a6e0e189b846ed062bfc7d
+Subproject commit 722eed1c46361a2d8136f1fac528a96749f5dbbd