Update git submodules

* Update frameworks/support from branch 'androidx-master-dev'
  to ec5ab08ac82685c019588ecd37dfb5b6f40b740a
  - Merge "Snapshot global query results in tests." into androidx-master-dev
  - Snapshot global query results in tests.
    
    Snapshot what documents may exist already on the device at the start of
    a global query test. Then only assert the difference. This removes the
    assumption that each test case is running a clean instance of AppSearch
    on the device and makes it more portable. Also remove the short-term
    solution to clear all db's across tests and let each test handle
    cleaning up its own db's.
    
    Test: ./gradlew appsearch:appsearch:connectedCheck --info --daemon
      ./gradlew appsearch:appsearch-local-storage:connectedCheck --info
      --daemon
    Change-Id: Id8bfc3eacf79e46993453d2b6f9cf87a184b960e