[submodule][202503] Update submodule sonic-platform-daemons to the latest HEAD automatically (#1195)

#### Why I did it
src/sonic-platform-daemons
```
* c6ce7f8 - (HEAD -> 202503, origin/202503) [202503] Merge #592 "Have sff_mgr bring a linkup port out of lpmode" (6 minutes ago) [Arvindsrinivasan Lakshmi Narasimhan]
* a8ddaba - Manually apply PR #592 "Have sff_mgr bring a linkup port out of lpmode" (9 hours ago) [y7zhou]
```
#### How I did it
#### How to verify it
#### Description for the changelog

Author: arlakshm