[submodule] Update submodule sonic-swss to the latest HEAD automatica…

…lly (#20853)

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