Type added constant with Final as suggested

Author: bouwew

plugwise/constants.py

@@ -92,7 +92,7 @@
 NONE: Final = "None"
 OFF: Final = "off"
 PRIORITY_DEVICE_CLASSES = ("gateway", "heater_central")
-THERMO_MATCHING: dict[str, int] = {
+THERMO_MATCHING: Final[dict[str, int]] = {
     "thermostat": 2,
     "zone_thermometer": 2,
     "zone_thermostat": 2,