[swss]: Update sonic-swss submodule (sonic-net#2935)

[vlan] Add pytest case to add max vlan. (sonic-net#881)
[badge]: add vs build badge (sonic-net#898)
Fix PFC watchdog not getting lossless TC (sonic-net#876)
[vstest]: skip test_AddMaxVlan as it takes almost two hours to finish (sonic-net#901)
[test]: Enforce fake port-channel interfaces carrier up

Signed-off-by: Shu0T1an ChenG <[email protected]>

Author: Shuotian Cheng