[submodule] Update submodule sonic-swss to the latest HEAD automatically (sonic-net#731)

#### Why I did it
src/sonic-swss
```
* b87da49 - (HEAD -> 202412, origin/202412) Set Port UPDATE_DSCP attribute when TC_TO_DSCP map is attached (#44) (9 hours ago) [mssonicbld]
* 8c99374 - sonic-swss: Code changes for WRED and ECN statistics (#46) (9 hours ago) [mssonicbld]
```
#### How I did it
#### How to verify it
#### Description for the changelog

Author: mssonicbld