[sonic-utilities] Update submodule (#8072)

Updates:
888701b [Mellanox] Remove mstdump from Mellanoxs collect dump script ([sonic-net/sonic-utilities#1706])
4818360 [sonic-package-manager] support warm/fast reboot for extension packages ([sonic-net/sonic-utilities#1554])
793b847 [show priority-group drop counters] Remove backup with cached PG drop counters after 'config reload' ([sonic-net/sonic-utilities#1679])
24fe1ac [show][config] support for interface alias for muxcable commands ([sonic-net/sonic-utilities#1699])