[submodule] Advance sonic-utilities pointer

Update sonic-utilities submodule pointer to include the following:
* fba87f4 Revert ([sonic-net#2599](sonic-net/sonic-utilities#2599))
* d6d7ab3 [warm-reboot] Use kexec_file_load instead of kexec_load when available ([sonic-net#2608](sonic-net/sonic-utilities#2608))
* db4683d fix show techsupport error ([sonic-net#2597](sonic-net/sonic-utilities#2597))
* 3d8e9c6 [GCU] Prohibit removal of PFC_WD POLL_INTERVAL field ([sonic-net#2545](sonic-net/sonic-utilities#2545))
* 163e766 [techsupport] include APPL_STATE_DB dump ([sonic-net#2607](sonic-net/sonic-utilities#2607))
* 8703773 YANG Validation for ConfigDB Updates: RADIUS_SERVER ([sonic-net#2604](sonic-net/sonic-utilities#2604))
* c2d746d Remove TODO comment which is no longer relevant ([sonic-net#2600](sonic-net/sonic-utilities#2600))
* f09da99 [show] Add bgpraw to show run all ([sonic-net#2537](sonic-net/sonic-utilities#2537))
* 39ac564 Extend fast-reboot STATE_DB entry timer ([sonic-net#2577](sonic-net/sonic-utilities#2577))

Signed-off-by: vadymhlushko-mlnx <vadymh@nvidia.com>