[sonic-utilities]: Advance submodule (#11344)

Update sonic-utilities submodule to include below commits:
7070794 Fix DBConfig not initialize issue in pfcwd (#2238)
b5d6659 [config/load_mgmt_config] Support load IPv6 mgmt IP (#2206)
3274b0e Added bf_drivers.log to zipped dump after execution of "show techsupport" (#2164)
8dee36c [portstat] Update portstat to use CounterTable API (#2207)
7d9faf3 Added support for Sonic cross-compilation build. (#2233)
c3620fc [GCU] Moving UniqueLanes from only validating moves, to be a supplemental YANG validator (#2234)
Signed-off-by: Suvarna Meenakshi <sumeenak@microsoft.com>