[submodule update] sonic-utilities

d324eae (HEAD -> 201911, origin/201911) [PFCWD] Fix 'start' pfcwd command (sonic-net#1345)
235c61c [ecnconfig] handle backend port names when extracting port I/F ID from the port name (sonic-net#1361)
7f5c3b4 Drop explict 3 seconds pause between two object updates/deletes. (sonic-net#1359)
12c8992 add vlan_intf_object only if there are ipv4 or ipv6 mappings (sonic-net#1377)
52ce2c3 Add  subcommand description to interfaces counters (sonic-net#1373)
Signed-off-by: Abhishek Dosi <[email protected]>

Author: abdosi