[submodule] Update submodule for sonic-swss (#7432)

d9f28b6 [SflowMgr] SamplingRate Update by Speed Change Added (#1721)
6c02acf [MACsec]: Set macsec to bypass by default (#1719)
9720f74 [Monitor Vlan] Fix a typo in hostif (#1722)

Signed-off-by: Vivek Reddy Karri <vkarri@nvidia.com>