[202205][submodule] Update sonic-utilities submodule

Update sonic-utilities submodule pointer to include the following:
* ab21b58 [202205] check for vxlan mapping before removing vlan (sonic-net#2388) ([sonic-net#2446](sonic-net/sonic-utilities#2446))
* e111ad4 [202205][Auto-Techsupport] Fix the coredump_gen_handler Exception when the History table is empty (sonic-net#2265) ([sonic-net#2433](sonic-net/sonic-utilities#2433))
* 6925947 [watermarkstat][202205] Add new warning message for the 'q_shared_multi' counters ([sonic-net#2406](sonic-net/sonic-utilities#2406))

Signed-off-by: dgsudharsan <sudharsand@nvidia.com>