[202012][utilities] Update submodule

* Add pg-drop script to sonic filesystem (sonic-net#1583)
* Fixing serial number read to get from DB if it is populated (sonic-net#1580)
* Handle the new db version which mellanox_buffer_migrator isn't interested (sonic-net#1566)
* Relax the install_requires, no need to exact version as long as there are no broken changes with future versions (sonic-net#1530) (sonic-net#1592)

Signed-off-by: Danny Allen <[email protected]>