[Submodule update] sonic-utlities with PR's

[201911][show] Fix abbreviations for 'show ip bgp ...' commands (#909)
Changes to support acl-loader and mirror-session config commands for
multi-npu platforms. (#908)
Changes to commands  config reload/load-minigraph (#919)
Stop/Start restapi server upon config reload (#911)
[config] Add 'interface transceiver' subgroup with 'lpmode' and
'reset' subcommands (#904)