[sonic-swss] Update submodule (#7384)

Update the sonic-swss submodule. The following is the new commit in the submodule.
```
b34f783 Resolve neighbor when nexthop does not exist (#1704)
500e2e9 [voq/inbandif] Voq inbandif port (#1602)
9f22ba7 Handle IPv6 and ECMP routes to be programmed to ASIC (#1711)
1b916c3 [acl] Add regression test for `config acl` CLI command (#1694)
8bc7aee Allowing the first time FEC and AN configuration to be pushed to SAI (#1705)
d0dd6ee [Dynamic buffer calc][Mellanox] Fix bug: buffer over subscription in buffer pool size calculation (#1706)
d8b8ca9 fix for CRM available bug (#1699)
97f70d1 NAT : Update the CRM used counters for SNAT and DNAT entries (#1655)
a4e05a7 [vstest] System lag test timing issue fix (#1692)
ca8ba6d [vlan] Add support of VLAN host interface (#1645)

Author: shi-su