[submodule] Update submodule sonic-platform-daemons to the latest HEAD automatically (sonic-net#20309)

#### Why I did it
src/sonic-platform-daemons
```
* 2c39785 - (HEAD -> master, origin/master, origin/HEAD) [xcvrd] Add logs to improve debugging in xcvrd (sonic-net#539) (4 hours ago) [mihirpat1]
```
#### How I did it
#### How to verify it
#### Description for the changelog

Author: mssonicbld