[sonic-utilities] Update submodule (#6070)

6fabbed [consutil][test] Add unit tests for consutil clear command (#1274)
a4f663e [show/fgnhg] Fix crash bug (#1272)
9f276b2 [config][loopback] Fix Bug that cannot add loopback interface by CLI (#1276)
a5b78cf [config][show] CLI support for interacting with muxcable (#1221)
8f3b22e [connect][sonic-clear] Align the exit code with consutil for line commands (#1256)
cfb7a22 Feature table cli command update (#1271)
5b8da56 Added Multi-ASIC support for show ip(v6) route (#1216)
a7f39b0 Improve MockRedis _encode(): so it will work on all types of value (#1265)
8427caf [config_mgmt.py]: Remove sort_data call, we do not need it now. (#1246)
9dc58ea [sonic-utilities] Fix show vnet [neighbors | routes [all | tunnel]] crashed issue (#1263)

Signed-off-by: Abhishek Dosi <abdosi@microsoft.com>