[submodule] Update submodule sonic-ztp to the latest HEAD automatical…

…ly (#20678)

#### Why I did it
src/sonic-ztp
```
* 2ec9859 - (HEAD -> 202405, origin/202405) Merge pull request #61 from mssonicbld/cherry/202405/57 (9 hours ago) [bingwang-ms]
* 208d93d - Add role field to the ztp PORT config (#57) (9 days ago) [Vivek]
```
#### How I did it
#### How to verify it
#### Description for the changelog