[submodule] Update submodule sonic-linux-kernel to the latest HEAD automatically (sonic-net#25872)

#### Why I did it
src/sonic-linux-kernel
```
* dac5f90 - (HEAD -> master, origin/master, origin/HEAD) DTS file as a patch for Nexthop bmc card (sonic-net#537) (29 hours ago) [Chandrasekaran Swaminathan]
* 2afef96 - Add a patch for printing the AMD Zen CPU reset reason (sonic-net#514) (29 hours ago) [lotus-nexthop]
```
#### How I did it
#### How to verify it
#### Description for the changelog

Signed-off-by: Feng Pan <fenpan@microsoft.com>

Author: mssonicbld