[submodule] Update submodule sonic-gnmi to the latest HEAD automatically (#16900)

#### Why I did it
src/sonic-gnmi
```
* 07e0b36 - (HEAD -> master, origin/master, origin/HEAD) Recover from potential panic when doing map to JSON serialization (#161) (29 hours ago) [Zain Budhwani]
```
#### How I did it
#### How to verify it
#### Description for the changelog

Author: mssonicbld