Update git submodules

* Update development from branch 'main'
  to 55ab781f743f6ee7c8659e09b6bffaa0cd3cacb2
  - Merge "Add directory for external crate tool, with OWNERS file." into main
  - Add directory for external crate tool, with OWNERS file.
    
    Change-Id: I46707ad86b428f4ad5785dc23c19903e1b7bc843
    Test: treehugger.
    
1 file changed