[submodule] Update submodule sonic-swss to the latest HEAD automatically (#17821)

#### Why I did it
src/sonic-swss
```
* ac94f0b7 - (HEAD -> 202305, origin/202305) [202305][routeorch] Fixing bug with multiple routes pointing to nhg (#3002) (2 hours ago) [Nikola Dancejic]
```
#### How I did it
#### How to verify it
#### Description for the changelog

Author: mssonicbld