[submodule] Update submodule sonic-swss to the latest HEAD automatically (#18096)

#### Why I did it
src/sonic-swss
```
* 1221eae4 - (HEAD -> master, origin/master, origin/HEAD) Explicitly initialize two local variables to 0 (#3046) (26 hours ago) [Saikrishna Arcot]
```
#### How I did it
#### How to verify it
#### Description for the changelog
This commit is contained in:
mssonicbld
2024-02-15 16:32:54 +08:00
committed by GitHub
parent ca258a260e
commit 0b73937ec5