[submodule] Update submodule sonic-utilities to the latest HEAD automatically (sonic-net#20440)

#### Why I did it
src/sonic-utilities
```
* 72d1faa - (HEAD -> master, origin/master, origin/HEAD) Fix key error when checking for UTILITIES_UNIT_TESTING env var (sonic-net#3563) (12 hours ago) [HP]
```
#### How I did it
#### How to verify it
#### Description for the changelog

Author: mssonicbld