[submodule] Advance sonic-utilities pointer (#15779)

Update sonic-utilities submodule pointer to include the following:
* ff380e0 [hash]: Implement GH frontend ([#2580](sonic-net/sonic-utilities#2580))
* 61bad06 [db_migrator] Set correct CURRENT_VERSION, extend UT ([#2895](sonic-net/sonic-utilities#2895))
* 6b8ee47 [CLI][Show][BGP] Show BGP Change for no neighbor scenario ([#2885](sonic-net/sonic-utilities#2885))
* 73d8d63 [doc] Update Command-Reference.md, change show bgp peer command to show bfd peer ([#2750](sonic-net/sonic-utilities#2750))
* 7bc08c2 [db_migrator] Remove hardcoded config and migrate config from minigraph ([#2887](sonic-net/sonic-utilities#2887))
* b1aa942 [generate_dump]: Enhance show techsupport for Marvell platform ([#2676](sonic-net/sonic-utilities#2676))
* 316b14c Add support for secure upgrade ([#2698](sonic-net/sonic-utilities#2698))
* dc2945b [dns] Implement config and show commands for static DNS. ([#2737](sonic-net/sonic-utilities#2737))
* 8414a70 [chassis][multi asic] change acl_loader to use tcp socket for db communication ([#2525](sonic-net/sonic-utilities#2525))
* 0b629ba Revert [chassis][voq] Clear fabric counters queue/port (2789) ([#2882](sonic-net/sonic-utilities#2882))
* 3ba8241 [db_migtrator] Add migration of FLEX_COUNTER_DELAY_STATUS during 1911->master upgrade + fast-reboot. Add UT. ([#2839](sonic-net/sonic-utilities#2839))
* fceef2e [chassis][voq] Clear fabric counters queue/port ([#2789](sonic-net/sonic-utilities#2789))

Signed-off-by: dgsudharsan <[email protected]>

Author: dgsudharsan