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

…tomatically (#16059)

#### Why I did it
src/sonic-linux-kernel
```
* bf1ee0e - (HEAD -> 202305, origin/202305) Fix Makefile syntax and provide default value for CONFIGURED_PLATFORM (#324) (13 hours ago) [Saikrishna Arcot]
* 7d7abaf - Update codeowner and build info (#319) (13 hours ago) [Saikrishna Arcot]
```
#### How I did it
#### How to verify it
#### Description for the changelog