Update git submodules

* Update docs/submodules/appc.git from branch 'master'
  to 6baf061a9caa39bd2fff0c7420e5562dfb31a8c6
  - Sonar fix- APPC-1715
    
    Fixed multiple sonar issues across this file
    
    Issue-ID: APPC-1715
    Change-Id: I5a7df4bde164b8ec3c8f91f07646d0630d52fa59
    Signed-off-by: Arundathi Patil <arundpil@in.ibm.com>
    
diff --git a/docs/submodules/appc.git b/docs/submodules/appc.git
index 4d759ef..6baf061 160000
--- a/docs/submodules/appc.git
+++ b/docs/submodules/appc.git
@@ -1 +1 @@
-Subproject commit 4d759ef950a2be9dbbfc05850eec6b3feb295865
+Subproject commit 6baf061a9caa39bd2fff0c7420e5562dfb31a8c6