Update git submodules

* Update frameworks/support from branch 'androidx-main'
  to 51a6a4481d7701d261cfd851fbee4cfd5f2ab5f3
  - Merge "Update to AGP 8.11.0-alpha05" into androidx-main
  - Update to AGP 8.11.0-alpha05
    
    Bug: 409017935
    Test: presubmit
    Change-Id: If58069bda94d13911cab47bdf6fcc3bbcf74e690
    

* Update prebuilts/androidx/external from branch 'androidx-main'
  to 07609ba0853f0ac13556d5228572aa8c1f6bdbf5
  - Merge "Add prebuilts for AGP 8.11.0-alpha05" into androidx-main
  - Add prebuilts for AGP 8.11.0-alpha05
    
    Bug: 409017935
    Test: presubmit
    Change-Id: I942226eedee12fa7feb8935920a6fe56bda1765e
    
2 files changed