Update git submodules

* Update prebuilts/build-tools from branch 'main'
  to 5c0b50c49d7c958c05cd3050e43f4772003df800
  - Remove BUILD_BROKEN_DISABLE_BAZEL
    
    The Bazel migration has been cancelled, and this flag has no effect
    now.
    
    Bug: 315353489
    Test: Presubmits
    Change-Id: Ifd63a2413f487e4676503d20f84a147017e58f04
    
1 file changed