[submodule update] sonic-utilities

603ac53c573ca6fbb8c1ca67091ebac428b8661e (HEAD -> 201911, origin/201911) Advertise ipv6 link local address (#1402)
9b0680c3bdc4c8f28d0266a7c422b29582e0888a [acl_loader] Fix default DENY rule for V6 dataplane ACLs (#1281)
25e64ce5fe9597a13a4259c185f72df9b655ab0c [show] Fix `show ip bgp sum` (#1194)
4709da02bec6014a5f4a3946a2885f50878fce3c Revert "Add FW dump with new SAI implementation (#1298)" (#1408)

Signed-off-by: Abhishek Dosi <abdosi@microsoft.com>