Update git submodules

* Update system/core from branch 'main'
  to 6726655b5c880ac91cf89b5eaef63445ff526309
  - Merge "Fix mte_upgrade_test" into main
  - Fix mte_upgrade_test
    
    init ignored the rc file because of incorrect permissions
    also replace deprecated "push" with "push-file"
    
    Test: atest mte_upgrade_test
    Bug: 335232356
    Change-Id: I4c17311dbb1d001567f4cdda65036f16aec2b5c1
    
1 file changed