Lowercase nibble in commands_hpsu.csv

[segaura]

In HPSU.py the logic on "commands" require them to be defined with all nibble uppercase (e.g. if command[6:8] != "FA").

the file etc/pyHPSU/commands_hpsu.csv has a last row with some lowercase nibble

t_flow_cooling;61 00 fa 03 dd 00 00;190;d;10;w

this should be

t_flow_cooling;61 00 FA 03 DD 00 00;190;d;10;w

[Spanni26]

Thats a quick fix. But I would also add a ".upper()" at HPSU.py where it is needed. Will add it at the next pull request