[submodule] Update submodule sonic-platform-common to the latest HEAD automatically (#778)

#### Why I did it
src/sonic-platform-common
```
* 81f22bd - (HEAD -> 202412, origin/202412) [code sync] Merge code from sonic-net/sonic-platform-common:202411 to 202412 (#48) (20 hours ago) [mssonicbld]
```
#### How I did it
#### How to verify it
#### Description for the changelog

Author: mssonicbld