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

…lly (sonic-net#634)

#### Why I did it
src/sonic-swss
```
* b2a7b03 - (HEAD -> 202412, origin/202412) [code sync] Merge code from sonic-net/sonic-swss:202411 to 202412 (sonic-net#36) (7 hours ago) [mssonicbld]
* 84485cd - [code sync] Merge code from sonic-net/sonic-swss:202411 to 202412 (#35) (31 hours ago) [mssonicbld]
* 6e83557 - [code sync] Merge code from sonic-net/sonic-swss:202411 to 202412 (#34) (2 days ago) [mssonicbld]
```
#### How I did it
#### How to verify it
#### Description for the changelog