Update git submodules

* Update docs/submodules/appc.git from branch 'master'
  to 8f98b8ef92220f195333c69884258851142f94ce
  - Document OJSI-25 (CVE-2019-12316) vulnerability
    
    Issue-ID: OJSI-25
    Signed-off-by: Krzysztof Opasiak <k.opasiak@samsung.com>
    Change-Id: Ia880184484aadea9147fcac301c87063a00f92ab
    
1 file changed