fix(thermocycler-gen2 script): fix order of thermistor data (#433)

Author: fsinapi

stm32-modules/thermocycler-gen2/scripts/hold_temp.py

@@ -56,7 +56,7 @@ class Thermistors:
         bl: float # back left
 
         def __str__(self):
-            return f'{self.hs},{self.fr},{self.fc},{self.fl},{self.br},{self.bc},{self.bl}'
+            return f'{self.hs},{self.fr},{self.fl},{self.fc},{self.br},{self.bl},{self.bc}'
 
     @dataclass
     class Power: