[submodule] Update submodule sonic-gnmi to the latest HEAD automatically (#16833)

#### Why I did it
src/sonic-gnmi
```
* 8e13400 - (HEAD -> master, origin/master, origin/HEAD) Fix random build failures due to sonic_internal.proto (#157) (3 days ago) [Sachin Holla]
```
#### How I did it
#### How to verify it
#### Description for the changelog
This commit is contained in:
mssonicbld 2023-10-14 06:32:28 +08:00 committed by GitHub
parent 35b6d3f6ed
commit 465ccde3d5
No known key found for this signature in database
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@ -1 +1 @@
Subproject commit cbb763111e6355666c2d7c2dd1a90d5e9ae3935d
Subproject commit 8e134003bdd29986adb4766cdd33a526a1c13586