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)

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

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

What I did
Resolve neighbor entries if nexthop does not exist when adding routes.

Why I did it
In some scenarios, such as adding static routes, the nexthop may not be available, this PR would trigger an attempt to resolve the neighbor. Note that routeorch would only trigger resolution of a neighbor once even if it fails. The arp_update script would find the unresolved neighbor and retry neighbor resolution.

…AD automatically (sonic-net#1704)

#### Why I did it
src/sonic-utilities
```
* c6a577ac - (HEAD -> 202412, origin/202412) [202412][trim]: Fix GCU trimming eligibility modification (sonic-net#244) (3 minutes ago) [Nazarii Hnydyn]
```
#### How I did it
#### How to verify it
#### Description for the changelog