更新源树中的所有子模块

### Update all Submodules, using a Custom Action, in Source Tree

1. Go to **Actions > Custom Actions > Edit > Add**
2. Menu Caption `Update All Submodules`
3. Check `Show Full Output`
4. Script to run `/usr/bin/git`

   _If installed in default location_
   
5. Parameters `submodule update --recursive --remote`