Update git submodules

* Update frameworks/support from branch 'androidx-main'
  to a4d394978a8da60ed4e59a7cd6178b388cb2177f
  - Merge "[GH] Yigit/fix playground include regex" into androidx-main
  - [GH] Yigit/fix playground include regex
    
    A change in AOSP broke the project regex parser for settings.gradle.
    
    This CL updates the regex and also adds tests for expected cases.
    
    Bug: n/a
    Test: local + CI
    
    This is an imported pull request from https://github.com/androidx/androidx/pull/340.
    
    Resolves #340
    Github-Pr-Head-Sha: e3a173744873fdf15da5d3b12cb24ac0fe5a5413
    GitOrigin-RevId: b4516a73992039ce751e1d76a06c6c9c9f3f6afa
    Change-Id: I699884aa81f959deaa57e4a3765c49bb9585ba47