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

…lly (#18899)

#### Why I did it
src/sonic-gnmi
```
* adece7c - (HEAD -> master, origin/master, origin/HEAD) Merge pull request #234 from saiarcot895/use-latest-swsscommon (3 days ago) [Saikrishna Arcot]
|\ 
| failure_prs.log 82c57c7 - Merge branch 'master' into use-latest-swsscommon (4 days ago) [Saikrishna Arcot]
| |\ 
| |/ 
|/| 
* | d442e7a - Fix memory leak in unit test (#235) (4 days ago) [Hua Liu]
| failure_prs.log ec15a40 - Use the latest libswsscommon artifacts from the repo (4 days ago) [Saikrishna Arcot]
|/ 
* d16d1ca - Fix mixed_db_client ZMQ memory leak. (#232) (6 days ago) [Hua Liu]
* abe3ec0 - Merge pull request #227 from liuh-80/dev/liuh/fix_zmq_memory_leak (6 days ago) [Hua Liu]
* 7949eff - Fix indent issue (6 days ago) [liuh-80]
* 50c6c6d - Merge remote-tracking branch 'origin' into dev/liuh/fix_zmq_memory_leak (6 days ago) [liuh-80]
* 43b6fe5 - Improve code (6 days ago) [liuh-80]
* 709be76 - Fix ZMQ memory leak (7 days ago) [liuh-80]
```
#### How I did it
#### How to verify it
#### Description for the changelog