[submodule] Update submodule linkmgrd to the latest HEAD automatically (sonic-net#22350)

#### Why I did it
src/linkmgrd
```
* 82fee52 - (HEAD -> master, origin/master, origin/HEAD) add code owner (sonic-net#290) (3 hours ago) [Jing Zhang]
```
#### How I did it
#### How to verify it
#### Description for the changelog

Author: mssonicbld