Update git submodules

* Update platform/cts from branch 'master'
  to e3e830216821a750a108ef4bd7e5e46388423f4d
  - Merge "CEC: Test Volume <User Control Pressed>"
  - CEC: Test Volume <User Control Pressed>
    
    Add tests that check that the playback device sends <UCP> for volume key
    press events to the TV.
    
    Bug: 159208613
    Test: atest android.hdmicec.cts.playback.HdmiCecRemoteControlPassThroughTest#cect_sendVolumeKeyPressToTv
    
    Change-Id: Ideeb7ac6b34f81b4d5ec04ba32b157f83be17ebf