[sonic-utilities][sonic-ztp] Update submodules (#4501)

* src/sonic-utilities 7ce5b62...3471926 (4):
  > Make `config` command support abbreviation. (#893)
  > [fwutil]: Fix firmware update command. (#895)
  > [doc]: ZTP configuration and show commands (#866)
  > Allow show ztp to display non-sensitive information visible to
  > non-root user (#872)

* src/sonic-ztp 374c9e8...c959371 (2):
  > Fix ztp profile unit test (#14)
  > Create a shadow ZTP data json file accessible to non-root user (#13)