Update git submodules

* Update frameworks/support from branch 'androidx-main'
  to 96204112bfab6662ea5bbdf0f566ddb89e2fa21e
  - Merge "Fix a bug on Position Indicator" into androidx-main
  - Fix a bug on Position Indicator
    
    Position indicator was keeping a reference to the old state when the
    parameter changed to another reference.
    Relnote: "Fixed a bug on Position Indicator when used with more than one
    state and switching between them"
    Test: Added demo.
    
    Change-Id: I320b52abbc7649022385ac33919f6e59f92c4f4b