[submodule] Update submodule sonic-mgmt-common to the latest HEAD automatically (#17313)

#### Why I did it
src/sonic-mgmt-common
```
* 268b67c - (HEAD -> master, origin/master, origin/HEAD) Integrating the transformer infra GET optimization, Request context cancel handling and other bug fixes (#111) (2 hours ago) [Balachandar Mani]
```
#### How I did it
#### How to verify it
#### Description for the changelog
This commit is contained in:
mssonicbld 2023-11-28 16:34:27 +08:00 committed by GitHub
parent 80615f45db
commit 67e414f30f
No known key found for this signature in database
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@ -1 +1 @@
Subproject commit faa2a51b8f1defd36026f637b1abe56d972ac116
Subproject commit 268b67cb49392061b128e291aea350f8a91c8e00