[submodule] Update submodule sonic-mgmt-common to the latest HEAD automatically (#18257)

#### Why I did it
src/sonic-mgmt-common
```
* fbb5fcd - (HEAD -> master, origin/master, origin/HEAD) Script to populate the test data to the simulator db (10 hours ago) [Sachin Holla]
```
#### How I did it
#### How to verify it
#### Description for the changelog
This commit is contained in:
mssonicbld 2024-03-05 19:01:39 +08:00 committed by GitHub
parent 10ec32cbe8
commit 16b31f2338
No known key found for this signature in database
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@ -1 +1 @@
Subproject commit 99052691c3aa2c9ddaf5f69104af12677a387d4d Subproject commit fbb5fcdb9c8fc142b2840f99c6aa25894c369185