[submodule] Update submodule sonic-gnmi to the latest HEAD automatically (#17557)

#### Why I did it
src/sonic-gnmi
```
* 752f1fc - (HEAD -> master, origin/master, origin/HEAD) Use swsscommon API to read database configuration (#176) (3 weeks ago) [ganglv]
```
#### How I did it
#### How to verify it
#### Description for the changelog
This commit is contained in:
mssonicbld 2024-01-11 16:34:47 +08:00 committed by GitHub
parent cbd44e1ac4
commit 3974a3459e
No known key found for this signature in database
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@ -1 +1 @@
Subproject commit 88e82d4bc40658bc100a9a0508b1d1289a924a61
Subproject commit 752f1fceffa2d8fa7138638dd49c2d0aec96bc7b