[sonic-utilities] Update submodule (#8196)

Includes below commits
```
d19829c 2021-07-16 | Revert "[minigraph][port_config] Consume port_config.json while reloading minigraph (#1705)" [Guohan Lu]
cd1f6e6 2021-07-15 | Reworked IP validation in "config interface ip add/remove" command (#1709) [Andriy Kokhan]
66c34c0 2021-07-15 | [minigraph][port_config] Consume port_config.json while reloading minigraph (#1705) [Blueve]
```