Ensure that next build of AntennaPod uses submodules
3.2.0 does not use submodules yet, but a future update (probably 3.4.0) will. This ensures that we don't forget adding the submodules statement.
3.2.0 does not use submodules yet, but a future update (probably 3.4.0) will. This ensures that we don't forget adding the submodules statement.