[submodule] Update submodule sonic-platform-daemons to the latest HEA…

…D automatically (#15852)

#### Why I did it
src/sonic-platform-daemons
```
* 94242c2 - (HEAD -> master, origin/master, origin/HEAD) Use vendor customizable fan speed threshold checks (#378) (3 hours ago) [spilkey-cisco]
* db6e340 - Fix index out of range in the error log of invalid media lane mask received (#386) (8 hours ago) [MichaelWangSmci]
```
#### How I did it
#### How to verify it
#### Description for the changelog