[Submodule-Update] sonic-swss. Following changes:

 Enable m_isCombinedMirrorV6Table for BFN platform (#1212)
[vnet]: Update VNET route table size to 40K for BITMAP implementation (#1132)
 Default action for Egress ACL Table not poulated. (#1208)
Add/Del lag_name_map item according to lag adding and removing (#1124)
Increase ip2me CIR/CBR for faster in-band file transfers (#1000)