[submodule] Update submodule sonic-swss to the latest HEAD automatically (sonic-net#20853)

#### Why I did it
src/sonic-swss
```
* 1843de47 - (HEAD -> master, origin/master, origin/HEAD) Ensure second route group OID is correct (sonic-net#3380) (2 hours ago) [Lawrence Lee]
* c86efa18 - Added support for "UNDERLAY_SET_DSCP" and "UNDERLAY_SET_DSCPV6" tables (sonic-net#3307) (2 hours ago) [siqbal1986]
* 0b331f0d - platform/innovium renaming to platform/marvell-teralynx (sonic-net#3252) (10 hours ago) [krismarvell]
* c865803e - [mirror] erspan ipv6 underlay (see PR sonic-net#1817) (sonic-net#3317) (30 hours ago) [mramezani95]
```
#### How I did it
#### How to verify it
#### Description for the changelog

Author: mssonicbld