[submodule]: update submodule head for sonic-swss (sonic-net#7187)

[SFlowMgr] Sflow Crash on 200G ports handled (sonic-net#1683)
Remove PGs from an administratively down port. (sonic-net#1677)
Stablize the test case (sonic-net#1679)
Revert "Revert "[buffermgr] Support maximum port headroom checking (sonic-net#1607)" (sonic-net#1675)" (sonic-net#1682)

Signed-off-by: Stephen Sun <stephens@nvidia.com>