[submodule] Update submodule sonic-swss to the latest HEAD automatically (#18070)

#### Why I did it
src/sonic-swss
```
* b3b6a838 - (HEAD -> master, origin/master, origin/HEAD) [test_mux] Multi-mux-nh full test coverage (#3028) (25 minutes ago) [Nikola Dancejic]
* 3bd01444 - Bfd support for TSA state. (#2926) (6 hours ago) [siqbal1986]
```
#### How I did it
#### How to verify it
#### Description for the changelog
This commit is contained in:
mssonicbld
2024-02-08 16:32:42 +08:00
committed by GitHub
parent f49711f246
commit bd4bf76163