Update git submodules

* Update frameworks/support from branch 'androidx-master-dev'
  to b6ce4cb854a5b7d46b1032edd0be5b99822d6e8e
  - Merge "Implement the package-private AutoCloser which is responsible for reference counting, and scheduling auto-close operations." into androidx-master-dev
  - Implement the package-private AutoCloser which is responsible for reference counting, and scheduling auto-close operations.
    
    Test: AutoCloserTest.java
    RelNote: This is the first of a few cls to implement auto-closing for Room Databases.
    Bug: 137223459
    Change-Id: Ia83707a80cb67e9bd86c60e29178ed393c8ddcac
    
1 file changed