[submodule] Update submodule sonic-gnmi to the latest HEAD automatically (#15921)

#### Why I did it
src/sonic-gnmi
```
* 610509b - (HEAD -> master, origin/master, origin/HEAD) Install necessary debs instead of entire artifact in azp (#137) (2 hours ago) [Zain Budhwani]
```
#### How I did it
#### How to verify it
#### Description for the changelog
This commit is contained in:
mssonicbld 2023-07-20 20:50:08 +08:00 committed by GitHub
parent 601ec40700
commit a4787fd213
No known key found for this signature in database
GPG Key ID: 4AEE18F83AFDEB23

@ -1 +1 @@
Subproject commit 01fe667e7d44cdfb2d046064c18e4d14ac6c0b4d
Subproject commit 610509b3cc610af9373110e33dec807a8f9b7e11