[sonic-utilities] submodule update (sonic-net#7608)

[config]Static routes to config_db (sonic-net#1534)
[DPB]: Shut down interface before dynamic port breakout (sonic-net#1303)
[vlan] remove dhcp-relay as dhcp-relay commands will come as a plugin (sonic-net#1378)
Add 'default' option for sFlow. (sonic-net#1606)
[Command-Reference.md] Document new SNMP show and config commands (sonic-net#1600)

Signed-off-by: Shlomi Bitton <[email protected]>