[submodule] Update submodule sonic-host-services to the latest HEAD a…

…utomatically (#15548)

#### Why I did it
src/sonic-host-services
```
* 508d642 - (HEAD -> master, origin/master, origin/HEAD) [actions] Support Semgrep by Github Actions (#67) (31 hours ago) [Mai Bui]
```
#### How I did it
#### How to verify it
#### Description for the changelog