[submodule] Update submodule dhcprelay to the latest HEAD automatical…

…ly (#21342)

#### Why I did it
src/dhcprelay
```
* b4f59d0 - (HEAD -> 202311, origin/202311) [202311] Install corresponding dependency libs from 2002311 for PR check (#58) (11 hours ago) [Yaqiang Zhu]
```
#### How I did it
#### How to verify it
#### Description for the changelog