[submodule] Update submodule sonic-platform-common to the latest HEAD automatically (#21895)

#### Why I did it
src/sonic-platform-common
```
* c6f6bed - (HEAD -> master, origin/master, origin/HEAD) Restore optoe page to default 0 for active cables (#548) (9 hours ago) [Prince George]
* d7f22a7 - Initialize unsupported values to 'N/A' in CmisApi::get_transceiver_info (#545) (3 days ago) [Vasundhara Volam]
```
#### How I did it
#### How to verify it
#### Description for the changelog

Author: mssonicbld