[submodule] Update submodule sonic-ztp to the latest HEAD automatically (#25517)

#### Why I did it
src/sonic-ztp
```
* d34405f - (HEAD -> master, origin/master, origin/HEAD) Add .github/copilot-instructions.md for AI-assisted development (#70) (7 hours ago) [rustiqly]
```
#### How I did it
#### How to verify it
#### Description for the changelog

Author: mssonicbld