[submodule] Update submodule sonic-swss to the latest HEAD automatically (#936)

#### Why I did it
src/sonic-swss
```
* 9984ba7 - (HEAD -> 202412, origin/202412) Initialize number of counters to 0 before querying the capabilities (#64) (3 hours ago) [mssonicbld]
```
#### How I did it
#### How to verify it
#### Description for the changelog

Author: mssonicbld