Update git submodules

* Update frameworks/support from branch 'androidx-main'
  to 70e6e52db707f48490aa84fceec399530228f28f
  - Merge "TimeText - Tidy up demos and samples" into androidx-main
  - TimeText - Tidy up demos and samples
    
    Focus the samples and demos on showing UX approved use cases for TimeText.
    
    Test: ./gradlew :wear:compose:compose-material:connectedCheck --info --daemon
    Bug: 220845549
    Change-Id: Ibfa55b422e388266c67bcbdda9aeff815b9c35b9