Update git submodules

* Update frameworks/support from branch 'androidx-master-dev'
  to 478d863790acb18224c365b1ecc79390709dffe4
  - Merge "Update ctor visibility for AppInfo, HandshakeInfo, HostInfo, hashcode/equals for FailureResponse" into androidx-master-dev
  - Update ctor visibility for AppInfo, HandshakeInfo, HostInfo, hashcode/equals for FailureResponse
    
    - Expose public ctors that could be used for testing.
    - Make default ctors private as they are used for serialization only.
    - Add hashcode/equals for FailureResponse for test equality checks
    
    Relnote: N/A
    Bug: 175346212
    Bug: 175134952
    Bug: 175345422
    Test: gradlew :car:app:app:test
    Change-Id: I82c3ccaf7d3cb2b25cbae80f2fdd28b51ee3c6dc