Update git submodules

* Update external/lk from branch 'main'
  to 055f6de283033104bbddfc2c9eb8cbca09002579
  - arch: arm64: Include the device tree library when X0_DTB is set
    
    Bug: 297275002
    Test: Build + run Trusty
    
    Change-Id: I9d020aed1a08286933b698cf6c642c76b1183822
    
1 file changed