[submodule] Update submodule sonic-platform-daemons to the latest HEAD automatically (#18103)

#### Why I did it
src/sonic-platform-daemons
```
* 121b338 - (HEAD -> 202311, origin/202311) Unable to retrieve media settings with just Vendor name (#419) (10 hours ago) [mihirpat1]
```
#### How I did it
#### How to verify it
#### Description for the changelog
This commit is contained in:
mssonicbld
2024-02-16 16:33:06 +08:00
committed by GitHub
parent dcc5a162ec
commit e54c5b4b98