[submodule] Update submodule sonic-gnmi to the latest HEAD automatically (#21657)

#### Why I did it
src/sonic-gnmi
```
* 79dea34 - (HEAD -> master, origin/master, origin/HEAD) Partially restore translib test cases (3 hours ago) [Sachin Holla]
* 7559da7 - Introduce a patch to retain Jipanyang's commit (#354) (8 hours ago) [ganglv]
* f43c8bc - Fix dependency from PR:345 (#353) (27 hours ago) [Zain Budhwani]
```
#### How I did it
#### How to verify it
#### Description for the changelog

Author: mssonicbld