[submodule] Update submodule sonic-platform-common to the latest HEAD…

… automatically (#20747)

#### Why I did it
src/sonic-platform-common
```
* bad49e2 - (HEAD -> master, origin/master, origin/HEAD) Implement get/set_lpmode API for SFF8472 (#512) (2 days ago) [byu343]
* e79279b - Add negative case for pci_detach() and pci_reattach() (#504) (5 days ago) [Vasundhara Volam]
```
#### How I did it
#### How to verify it
#### Description for the changelog