[submodule] Update submodule sonic-utilities to the latest HEAD automatically (#19758)

#### Why I did it
src/sonic-utilities
```
* c29f0c63 - (HEAD -> 202311, origin/202311) [sfputil] Add loopback sub-command for debugging and module diagnostics (#3448) (3 hours ago) [Xinyu Lin]
```
#### How I did it
#### How to verify it
#### Description for the changelog

Author: mssonicbld