[submodule update] sonic-utilities (#4648)

Add 'hw-management-generate-dump.sh' to 'show techsupport' command (#923)
Add common PCIe diag tool (#771)
Multi-asic changes for config bgp commands and utilities. (#910)
Loopback interface configuration CLIs (#879)

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

Author: shlomibitton