[submodule] Update submodule sonic-linux-kernel to the latest HEAD au…

…tomatically (sonic-net#21011)

#### Why I did it
src/sonic-linux-kernel
```
* c281fc9 - (HEAD -> master, origin/test_202411_20, origin/test_202411_100, origin/master, origin/kperumal_202411, origin/HEAD, origin/202411) Integrate HW-MGMT 7.0040.2000 Changes (sonic-net#446) (4 days ago) [DavidZagury]
```
#### How I did it
#### How to verify it
#### Description for the changelog