[submodule] Update submodule sonic-gnmi to the latest HEAD automatica…

…lly (#18256)

#### Why I did it
src/sonic-gnmi
```
* 71ae185 - (HEAD -> 202305, origin/202305) Merge pull request #202 from sonic-net/revert-191-cherry/202305/190 (82 minutes ago) [StormLiangMS]
|\ 
| failure_prs.log e2b78b4 - (origin/revert-191-cherry/202305/190) Revert "Fix sonic string in osversion/build (#190)" (2 hours ago) [StormLiangMS]
|/ 
* b431273 - Account for GLOBAL key in PFC_WD (#178) (6 days ago) [Zain Budhwani]
* e1af33f - Merge pull request #199 from abdosi/202305 (6 days ago) [StormLiangMS]
|\ 
| failure_prs.log f7e216b - Update db_client.go (6 days ago) [abdosi]
|/ 
* ec3f56d - Fix sonic string in osversion/build (#190) (9 days ago) [Zain Budhwani]
```
#### How I did it
#### How to verify it
#### Description for the changelog