Update git submodules

* Update docs/submodules/appc.git from branch 'master'
  to ac73fdb6edf67652785aa58b5b205b2e61c1e417
  - CachedElement.java - Sonar Fixes
    
    CachedElement.java - Sonar Fixes
    
    Issue-ID: APPC-1508
    Change-Id: I24bdb1ab1e3c00975eba4ea92dcf34b8e26849dc
    Signed-off-by: Driptaroop Das <driptaroop.das@in.ibm.com>
    
1 file changed